Squared Deviation

Question

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

Question

In each case,   sketch the two specified normal curves on the same set of axes  

 a. A normal curve with u = 20 and σ = 3,   and a normal curve with u = 20 and σ = 6   

b. A normal curve with u = 20 and σ = 3,   and a normal curve with u = 30 and σ = 3   

c. A normal curve with u = 100 and σ =   10, and a normal curve with u = 200 and σ = 20