11. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation:

2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0

12. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation:

1,112; 1,245; 1,361; 1,372; 1,472

13. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation:

3.0, 3.4, 2.6, 3.3, 3.5, 3.2

Please find the solution in the attached file.

11. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation:

2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0

Mean = (2+2+0+5+1+4+1+3+0+0+1+4+4+0+1+4+3+4+2+1+0) / 21 =42 /21 = 2

Median

Arranging the given data into ascending order

0,0,0,0,0,1,1,1,1,1,2,2,2,3,3,4,4,4,4,4,5

Median is 2

c)

Square deviation = (X-Mean)^2

= (0-2)^2 + (0-2)^2+ …

This solution shows step-by-step calculations to determine the mean, median, sum of squared deviations, variance and standard deviation of the data.