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# C3 Study Slides - MAT 151

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### C3 Study Slides - MAT 151

1. 1. Active Learning Lecture Slides For use with Classroom Response Systems Elementary Statistics Eleventh Edition and the Triola Statistics Series by Mario F. Triola Chapter 3: Statistics for Describing, Exploring, and Comparing Data
2. 2. <ul><li>Which measure of center is the only one that can be used with data at the nominal level of measurement? </li></ul><ul><li>Mean </li></ul><ul><li>Median </li></ul><ul><li>Mode </li></ul>
3. 3. <ul><li>Which measure of center is the only one that can be used with data at the nominal level of measurement? </li></ul><ul><li>Mean </li></ul><ul><li>Median </li></ul><ul><li>Mode </li></ul>
4. 4. <ul><li>Which of the following measures of center is not affected by outliers? </li></ul><ul><li>Mean </li></ul><ul><li>Median </li></ul><ul><li>Mode </li></ul>
5. 5. <ul><li>Which of the following measures of center is not affected by outliers? </li></ul><ul><li>Mean </li></ul><ul><li>Median </li></ul><ul><li>Mode </li></ul>
6. 6. <ul><li>Find the mode for the given sample data. </li></ul><ul><li>79, 25, 79, 13, 25, 29, 56, 79 </li></ul><ul><li>79 </li></ul><ul><li>48.1 </li></ul><ul><li>42.5 </li></ul><ul><li>25 </li></ul>
7. 7. <ul><li>Find the mode for the given sample data. </li></ul><ul><li>79, 25, 79, 13, 25, 29, 56, 79 </li></ul><ul><li>79 </li></ul><ul><li>48.1 </li></ul><ul><li>42.5 </li></ul><ul><li>25 </li></ul>
8. 8. <ul><li>Which is not true about the variance? </li></ul><ul><li>It is the square of the standard deviation. </li></ul><ul><li>It is a measure of the spread of data. </li></ul><ul><li>The units of the variance are different from the units of the original data set. </li></ul><ul><li>It is not affected by outliers. </li></ul>
9. 9. <ul><li>Which is not true about the variance? </li></ul><ul><li>It is the square of the standard deviation. </li></ul><ul><li>It is a measure of the spread of data. </li></ul><ul><li>The units of the variance are different from the units of the original data set. </li></ul><ul><li>It is not affected by outliers. </li></ul>
10. 10. <ul><li>Weekly sales for a company are \$10,000 with a standard deviation of \$450. Sales for the past week were \$9050. This is </li></ul><ul><li>unusually high. </li></ul><ul><li>unusually low. </li></ul><ul><li>about right. </li></ul>
11. 11. <ul><li>Weekly sales for a company are \$10,000 with a standard deviation of \$450. Sales for the past week were \$9050. This is </li></ul><ul><li>unusually high. </li></ul><ul><li>unusually low. </li></ul><ul><li>about right. </li></ul>
12. 12. <ul><li>In a data set with a range of 55.1 to 102.8 and 300 observations, there are 207 data points with values less than 88.6. Find the percentile for 88.6. </li></ul><ul><li>32 </li></ul><ul><li>116.03 </li></ul><ul><li>69 </li></ul><ul><li>670 </li></ul>
13. 13. <ul><li>In a data set with a range of 55.1 to 102.8 and 300 observations, there are 207 data points with values less than 88.6. Find the percentile for 88.6. </li></ul><ul><li>32 </li></ul><ul><li>116.03 </li></ul><ul><li>69 </li></ul><ul><li>670 </li></ul>
14. 14. <ul><li>Which graphic display shows the least detailed information? </li></ul><ul><li>Histogram </li></ul><ul><li>Stem-and-leaf plot </li></ul><ul><li>Boxplot </li></ul>
15. 15. <ul><li>Which graphic display shows the least detailed information? </li></ul><ul><li>Histogram </li></ul><ul><li>Stem-and-leaf plot </li></ul><ul><li>Boxplot </li></ul>