Macintosh/PC Support Competitive Position™ Market Report

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Macintosh/PC Support Competitive Position™ Market Report

  1. 1. Macintosh/PC Support Competitive Position™ Market Report Title Page Preliminaries Table of Contents 1 Copyright, Address and Disclaimers 2 Welcome Letter 3 Salary Characteristics of the Job Market Characteristics of the Sample Data 4 Sample Salary and Experience Averages and Variance 5 Equation of the Expected Salary Offer 6 Expected Salary Offer for Each Year of Required Experience Standard 7 When Apple Share or Apple Talk is listed in a want ad 8 Extreme Salary Offers 1 Year of Required Experience 9 2 Years of Required Experience 10 3 Years of Required Experience 11 4 Years of Required Experience 12 5 Years of Required Experience 13 Reference Graph Reference: Expected Salary Offer per Year of Experience 14 Graph Reference: Extreme Salary Offers 15 Statistical Test Results 16 Heteroscedasticity Correction 17
  2. 2. Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc. All rights reserved. Whole Root™ Economic Research, Inc P.O. Box 603 South Glastonbury, CT 06073 http://www.wholeroot.com/ Toll Free: 1-888-413-1792 Fax: (860) 659-1792 E-mail: reports@wholeroot.com This License allows a single user to store, backup and print this Competitive Position™ Market Report. You must reproduce the Whole Root™ Economic Research, Inc. copyright notice on all prints. You may not modify, network, sell, subscribe, loan, electronically transfer or distribute this Competitive Position™ Market Report in whole or in part. Whole Root™ Economic Research, Inc. has carried out the Competitive Position™ Market Analysis and prepared the Competitive Position™ Market Report according to accepted statistical standards. The statistics present information about the data source. Possible biases and other errors may exist within the data source that Whole Root™ Economic Research, Inc. is not responsible for. Individual job placements can not be identified. Job placement and/or salary improvement is not guaranteed nor offered. The New York Times and the Washington Post are not associated with, do not endorse, and are not responsible for Competitive Position™ Market Analysis, Competitive Position™ Market Reports or Whole Root™ Economic Research in anyway. Computer hardware and/or software firms are not associated with, do not endorse, and are not responsible for Competitive Position™ Market Analysis, Competitive Position™ Market Reports or Whole Root™ Economic Research in anyway.
  3. 3. Welcome I established Whole Root™ Economic Research, Inc. in 1996 to provide extensive market analysis to individual decision makers. My Competitive Position™ Market Reports enable individuals to assess salary opportunities and set employment goals. It is the first affordable market analysis designed specifically to assist all participants in the job marketplace. Whether you are a computer professional, data processing manager or human resource professional, I hope you find this material useful. Thank you, Robert Gerald Vivona Economic Statistician Toll Free: 1-888-413-1792 Fax: (860) 659-1792 E-mail: bob@wholeroot.com A Special Thanks to: Nicholas Vivona Computer Industry Consultant
  4. 4. Macintosh/PC Support Characteristics of Sample Data Sample Source: The New York Times Sunday Employment section Dates: the 52 weeks (1 Year) from January 5 through December 28, 1997 Number of Classified Want Ads: 36 Qualifications listed in the Want Ads To be Included Each Salary Effected Salary Not Effected Want Ad Must Have When Listed when Listed PC/LAN Technician, PC/LAN Responsibility Support, PC/LAN Specialist, PC/LAN Tech Support, Network Technician or Network Support Hardware / OS Macintosh, WindowsNT = 8 Most Want Ads also listed Windows95 = 8 one form of Windows PC Language Database Network Apple Share or Apple Talk = 9 MIS Software Quark Express = 10 Industry Job Description • Install, upgrade and maintain network, OS and third-party software • Provide End User Desktop support of network, OS and third-party software • Maintain and upgrade network and hardware components • Dispatch and track troubleshooting of LAN/WAN and Level 2/3 problems Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  5. 5. Macintosh/PC Support Sample Averages and Distributions Sample Size: 36 Want Ads Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Salary Average and Distribution 41.6 = Average Salary Offer 68% of Want Ads list A Salary 32.3 50.9 between these two Extremes (+/– 1 standard deviation of 9.3) 95% of Want Ads list A Salary 23.4 59.9 between these two Extremes (+/– 1.96 standard deviations) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 Salary in $1,000's Required Experience Average and Distribution 2.4 = Average Required Years 68% of Want Ads list Experience 1.4 3.4 between these two Extremes (+/– 1 standard deviation of 1.02) 95% of Want Ads list Experience between these two Extremes 0.4 4.4 (+/– 1.96 standard deviations) 0 1 2 3 4 5 6 7 8 9 10 11 12 Number of Years of Required Experience Copyright © 1998 by Whole Root™ Economic Research, Inc.
  6. 6. Macintosh/PC Support The Equation of the Expected Salary Offer Salary offers are lowest at entry level and increase by a constant amount with each year of experience. Salary offers were larger when Apple Share/Talk was listed in the want ad. Entry Level Apple Share/Talk Year of Experience Effect on Dollars per Year Salary Offer only Multiplied by when listed in position Number of Years description Expected = $29.6 + $10.1 + $3.9 Salary Offer (if Apple Share/Talk) Years or 0 First = $34.0 + $1.9 + $5.7 95% Confidence (if Apple Share/Talk) Years Bound of Expected or Salary Offer 0 Second = $25.3 + $18.4 + $2.1 95% Confidence (if Apple Share/Talk) Years Bound of Expected or Salary Offer 0 The first and second bounds are constructed from the upper and lower 95% confidence intervals of the variables presented above. The Expected Salary Offer Graphs present the minmum confidence interval of the equation. Copyright © 1996, 1997, 1998 by Whole Root™ Economic Research, Inc
  7. 7. Macintosh/PC Support The Expected Salary Offer & its 95% Probability Range for Each Year of Required Experience 200 Salary in $1,000's 195 190 185 180 175 170 165 160 155 150 145 140 135 130 125 120 115 110 105 100 76.5 95 70.8 90 65.1 85 59.4 80 53.8 75 70 48.1 64.6 65 42.4 60.7 38.2 60 36.1 56.9 55 Highest $ Offer 53.0 34.0 49.1 50 to be expected, 45.2 45 with 95% Certainty 41.3 40 37.4 52.8 35 Expected 33.5 48.6 50.7 29.6 46.5 30 Salary Offer 44.4 25 40.2 42.3 31.0 36.7 20 Lowest $ Offer 15 to be expected, 25.3 10 with 95% Certainty 5 0 0 1 2 3 4 5 6 7 8 9 10 Years of Experience in Same Job Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  8. 8. Macintosh/PC with Apple Share/Talk Support The Expected Salary Offer & its 95% Probability Range for Each Year of Required Experience 200 Salary in $1,000's 195 190 185 180 175 170 165 160 155 150 145 140 135 130 125 120 115 110 87.1 105 81.4 100 75.7 95 70.0 90 64.3 85 58.6 80 53.0 74.8 75 47.8 70.9 70 45.8 67.0 65 Highest $ Offer 43.7 63.1 60 to be expected, 59.2 55.3 55 with 95% Certainty 51.4 50 47.5 62.4 45 Expected 43.7 58.3 60.3 39.8 56.2 40 Salary Offer 52.0 54.0 35 50.0 30 Lowest $ Offer 41.6 47.3 35.9 25 to be expected, 20 with 95% Certainty 15 10 5 0 0 1 2 3 4 5 6 7 8 9 10 Years of Experience in Same Job Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  9. 9. Macintosh/PC Support Extreme Salary Offers: 1 Year of Required Experience 33.5 = Expected Salary Offer 68% of Want Ads list A Salary between these two Extremes 26.1 41.0 (+/– 1 standard deviation of 7.5) 95% of Want Ads list A Salary 18.9 48.2 between these two Extremes (+/– 1.96 standard deviations) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 Salary in $1,000's Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  10. 10. Macintosh/PC Support Extreme Salary Offers: 2 Years of Required Experience 37.4 = Expected Salary Offer 68% of Want Ads list A Salary between these two Extremes 30.0 44.9 (+/– 1 standard deviation of 7.5) 95% of Want Ads list A Salary between these two Extremes 22.8 52.0 (+/– 1.96 standard deviations) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 Salary in $1,000's Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  11. 11. Macintosh/PC Support Extreme Salary Offers: 3 Years of Required Experience 41.3 = Expected Salary Offer 68% of Want Ads list A Salary between these two Extremes 33.8 48.8 (+/– 1 standard deviation of 7.5) 95% of Want Ads list A Salary 26.7 55.9 between these two Extremes (+/– 1.96 standard deviations) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 Salary in $1,000's Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  12. 12. Macintosh/PC Support Extreme Salary Offers: 4 Years of Required Experience 45.2 = Expected Salary Offer 68% of Want Ads list A Salary between these two Extremes 37.7 52.7 (+/– 1 standard deviation of 7.5) 95% of Want Ads list A Salary 59.8 between these two Extremes 30.6 (+/– 1.96 standard deviations) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 Salary in $1,000's Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  13. 13. Macintosh/PC Support Extreme Salary Offers: 5 Years of Required Experience 49.1 = Expected Salary Offer 68% of Want Ads list A Salary between these two Extremes 41.6 56.5 (+/– 1 standard deviation of 7.5) 95% of Want Ads list A Salary between these two Extremes 34.5 63.7 (+/– 1.96 standard deviations) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 Salary in $1,000's Sample Source: The New York Times Sunday Employment section 52 Weeks from January 5 through December 28, 1997 Copyright © 1997, 1998 by Whole Root™ Economic Research, Inc.
  14. 14. Graph Reference: Expected Salary Offer per Year of Experience The Middle Black Line This line depicts the expected salary offer for each year of required experience calculated from the sample of want ads. The expected salary for each year of required experience is shown in a box on the line. The expected salary is the most likely, and the average, salary offered. The 95% Probability Lines Infer the Expected Salary Offer for the Entire Job Market The sample of classified want ads enables inferences to be made concerning the entire job market for this position. The gray lines above and below the middle black line present the Highest and Lowest salary offers that can be expected in the entire job market. There is a 95% certainty that the average salary offer, within the entire job market for this position, lies between the High and the Low numbers that point to the gray lines at each year of required experience. Please Note: All three curves cross at the central tendency point. The further the number of years of required experience is from the central tendency point, the larger the 95% probability region of the expected salary offer.
  15. 15. Graph Reference: Extreme Salary Offers There are 3 statistics presented in this graph Each statistic presents an assessment of the likelihood or frequency of a salary offer occurring: = Expected Salary Offer The expected salary offer is the most likely salary offer as calculated from the sample of want ads 68% of Want Ads list a Salary The 68% probability extreme indicates the boundaries between these two Extremes where salary offers become infrequent (+/- 1 standard deviation) for the entire job market 95% of Want Ads list a Salary The 95% probability extreme indicates the boundaries between these two Extremes where salary offers become extremely infrequent (+/- 1.96 standard deviations) for the entire job market Extreme Salaries The 68% Probability Extremes: Salary offers are unlikely above or below this range Two Thirds (68%) of salary offers are in this range Only 1/6th (16%) of salary offers are greater than the high number Only 1/6th (16%) of salary offers are less than the low number The 68% confidence interval is constructed by taking one standard deviation then adding it to and subtracting it from the expected salary offer The 95% Probability Extremes Salary offers are extremely unlikely above or below this range 95% of salary offers are in this range Only 2.5% of salary offers are greater than the high number Only 2.5% of salary offers are less than the low number The 95% confidence interval is constructed by multiplying the standard deviation by 1.96 then adding it to and subtracting it from the expected salary offer For the complete presentation of the expected salary offer please see the "Expected Salary Offer per Year of Experience" graph.
  16. 16. Macintosh/PC Support Statistical Test Results Regression Corrected for Heteroscedasticity Regression Summary Salary (H adj) vs. 3 Independents Count 36 Num. Missing 0 R .991 R Squared .983 Adjusted R Squared .981 RMS Residual 1.450 The expected salary offer line was corrected for heteroscedasticity (please view the Heteroscedasticity Correction page for specifics). A consequence of correctly accounting for the relationship within the variance is that the R Squared statistic is no longer accurate. The variation around the mean salary offer has been altered to correctly calculate the expected salary offer line with all available information. The variability of salary offers around the Expected Salary Offer line is depicted in the 95% Probability Range of the expected salary offer and in the Extreme Salary Offer Graphs. The R Squared statistic calculates the percentage of the variation in salary offers away from the mean salary offer, explained by the expected salary offer line. An R Squared statistic of 1 would indicate that the expected salary offer line would be the only salary offered in the marketplace. A reasonable degree of variability should be expected due to the many factors influencing individual want ads. ANOVA Table Salary (H adj) vs. 3 Independents DF Sum of Squares Mean Square F-Value P-Value Regression 3 4005.957 1335.319 634.941 <.0001 Residual 33 69.401 2.103 Total 36 4075.358 Regression Coefficients Salary (H adj) vs. 3 Independents Coefficient Std. Error Std. Coeff. t-Value P-Value Entry Level (H adj) 29.646 2.136 .828 13.877 <.0001 Apple Share/Talk (H adj) 10.129 4.048 .154 2.502 .0175 Years (H adj) 3.887 .886 .337 4.387 .0001 The statistical significance tests indicate a high level of quality for the expected salary offer numbers: 1. There is less than a . 01% (one ten-thousandth) chance that there is no relationship between salary offers and experience requirements (P-Value in ANOVA Table). 2. There is less than a . 01% (one ten-thousandth) chance that the entry level salary offer can't be defined (Entry Level P-Value in Regression Coefficients Table). 3. There is less than a . 01% (one ten-thousandth) chance that the yearly increase in salary offer can't be defined (Years P-Value in Regression Coefficients Table). 4. There is a 1.75% chance that the Apple Share/Talk effect can't be defined (Apple Share/Talk P-Value in Regression Coefficients Table).
  17. 17. Macintosh/PC Support Heteroscedasticty Correction Heteroscedasticity Regression Test Dependent Variable= ln(Resid^2) Independent Variables: X1= Apple Share/Talk, X2= Quark Express The variation in salary offers above and below the expected salary line is larger when "Apple Share/Talk" is asked for and smaller when "Quark Express" is asked for. This additional information is factored into the analysis by dividing all columns by: (e^(2.724 + 2.044*Apple Share/Talk – 1.035*Quark Express)^.5 When each want ad is wheighted by its dependent effect on the variance, an unbiased expected salary offer line with constant variance is derived. Test Results R^2 Statistic F Statistic Count 36 DF Sum of Squares Mean Square F-Value P-Value Num. Missing 0 Regression 2 29.604 14.802 9.197 .0007 R .598 Residual 33 53.111 1.609 R Squared .358 Total 35 82.716 Adjusted R Squared .319 RMS Residual 1.269 t Statistics Coefficient Std. Error Std. Coeff. t-Value P-Value Intercept 2.724 .267 2.724 10.212 <.0001 Apple Share/Talk 2.044 .500 .584 4.089 .0003 QuarkExpress -1.035 .483 -.306 -2.142 .0396 Original Regression Test Results with Heteroscedasticity R^2 Statistic Count 36 Num. Missing 0 F Statistic R .626 DF Sum of Squares Mean Square F-Value P-Value R Squared .392 Regression 2 1186.023 593.012 10.645 .0003 Adjusted R Squared .355 Residual 33 1838.282 55.706 RMS Residual 7.464 Total 35 3024.306 t Statistics Coefficient Std. Error Std. Coeff. t-Value P-Value Intercept 26.645 4.968 26.645 5.364 <.0001 Apple Share/Talk 9.417 2.938 .445 3.206 .0030 ln(Years+1) 10.714 4.161 .357 2.575 .0147 95% Confidence Intervals Coefficient 95% Lower 95% Upper Intercept 26.645 16.539 36.752 Apple Share/Talk 9.417 3.441 15.394 ln(Years+1) 10.714 2.248 19.181

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