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Author Question: The following observations are given for two variables.yx5281218320622113019101879a.Compute and ... (Read 19 times)

Ale

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on: Mar 25, 2023

Question 1

The following is a frequency distribution of grades of a sample of statistics examinations.

 

Grade

Frequency

50 - 59

  7

60 - 69

10

70 - 79

22

80 - 89

15

90 - 99

  6


Compute the following measures:
 

a.The mean
b.The variance
c.The standard deviation
d.The coefficient of variation



Question 2

The following observations are given for two variables.

 

y

x

  5

  2

  8

12

18

  3

20

  6

22

11

30

19

10

18

  7

  9


 

a.Compute and interpret the sample covariance for the above data.
b.Compute the standard deviation for x.
c.Compute the standard deviation for y.
d.Compute and interpret the sample correlation coefficient.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by Ale on Mar 25, 2023

ElaneShive

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Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Ale

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Reply 2 on: Mar 25, 2023
Wow, this really help

Joy Chen

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Reply 3 on: Yesterday
Excellent

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