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Unit 3
Mean = Median = Mode
Mean is greater than the median
Mean is less than the Median
• Measures of Variation

Variance (V)
Standard Deviation (SD)

=

SD

Range = Hs – Ls

V

=

n (Tx2) –(Tx)2
n(n -1)
___
√V
For instance, considering the scores of two
groups of math major students as follows:
Group A
10
12
15
18
20

Group B
28
15
2
22
8
Example
Example. A random sample of 5
households in Bonifacio produced the
following estimates of viewing hours per
household:
3, 6.5, 12, 3.5, 5
Find the
Deviation

Variance

and

Standard
Sources:

Brase, C.H. & C. P. Brase.
Statistics.U.S.A.: D.C. Heath and Company.

(1987).

Understandable

Calano, R.B. & D.D. Cachuela. (2006). Statistics for the Health
Profession TextWorkbook.Philippines: EPH.
Ferguson, G. A.(1981). Statistical Analysis in Psychology and
Education.U.S.A: Mc Graw-Hill International Book Company.
Pfaffenberger R.C. & J.H. Patterson. (1987). Statistical Methods
for Business and Economics.U.S.A.:Automobila Quarterly Publications.
Subia, G.S. et.al. (2007). Basic Statistics Worktext-With Research
Applications and Probability. Ermita Manila: Educational Publishing House.
U.P.Statistical Center Research Foundation, Inc.and The School
of Statistics.(2005). Applied Statistics. U.P. Diliman,Quezon City.

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UNIT 3 & 4

  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14. Mean = Median = Mode
  • 15. Mean is greater than the median
  • 16. Mean is less than the Median
  • 17. • Measures of Variation Variance (V) Standard Deviation (SD) = SD Range = Hs – Ls V = n (Tx2) –(Tx)2 n(n -1) ___ √V
  • 18. For instance, considering the scores of two groups of math major students as follows: Group A 10 12 15 18 20 Group B 28 15 2 22 8
  • 19. Example Example. A random sample of 5 households in Bonifacio produced the following estimates of viewing hours per household: 3, 6.5, 12, 3.5, 5 Find the Deviation Variance and Standard
  • 20. Sources: Brase, C.H. & C. P. Brase. Statistics.U.S.A.: D.C. Heath and Company. (1987). Understandable Calano, R.B. & D.D. Cachuela. (2006). Statistics for the Health Profession TextWorkbook.Philippines: EPH. Ferguson, G. A.(1981). Statistical Analysis in Psychology and Education.U.S.A: Mc Graw-Hill International Book Company. Pfaffenberger R.C. & J.H. Patterson. (1987). Statistical Methods for Business and Economics.U.S.A.:Automobila Quarterly Publications. Subia, G.S. et.al. (2007). Basic Statistics Worktext-With Research Applications and Probability. Ermita Manila: Educational Publishing House. U.P.Statistical Center Research Foundation, Inc.and The School of Statistics.(2005). Applied Statistics. U.P. Diliman,Quezon City.