BASIC STATISTICS

Basic Statistics Frequency Distributions

Basic Statistics Frequency Distributions

Standard Deviation

Dates

Number of Working Hours

X - Mean

(X - Mean)^2

March 28th 2013

8 hrs

0.31

0.10

March 29th 2013

6.5 hrs

- 1.19

1.41

March 30th 2013

7.5 hrs

- 0.19

0.04

March 31st 2013

8 hrs

0.31

0.10

April 1st 2013

8 hrs

0.31

0.10

April 2nd 2013

8.5 hrs

0.81

0.66

April 3rd 2013

9.25 hrs

1.56

2.44

April 4th 2013

8 hrs

0.31

0.10

April 5th 2013

4 hrs

- 3.69

13.60

April 8th 2013

8 hrs

0.31

0.10

April 9th 2013

9 hrs

1.31

1.72

April 10th 2013

7.5 hrs

- 0.19

0.04

Sum

92.25

20.39

Mean

=

92.25

=

7.69 hrs

12

Variance

=

20.39

=

1.70

12

Standard Deviation

=

1.304

From the above standard deviation value, it is indicated that there is not too much deviation in the mean value as the standard deviation of the data is 1.3 which is not close to the mean value of number of working hours that is ...