Course: Business Statistics/Economics

Agri-Beef Inc. operates cattle feed lots in several midwestern states.

The company wishes to estimate the average daily weight gain

of cattle on their lots.A simple random sample

of cattle is taken and the daily weight gain is recorded.

The data below, in pounds, represent the results of the sample.

Using these data, calculate the sample standard deviation and the sample

mean daily weight gain estimate for all cattle on the feed lots.

Report the following:

SX =

Sample Mean =

SX²=

Sum of Squares for X = SSx =S( X-)²=

Sample Variance = s²=

Sample standard deviation =s=

5.6

8.1

5.5

5.9

5.7

6.8

6.1

6.8

7.5

8.4

5.5

7.2

6.8

7.7

6.5