Elementary Statistics and Frequency Distribution

Find P25 for the following data: 2 6 3 4 2 1 2 0 1 3 6 3

You are given the following frequency distributionfor the number of errors 10 students made in a test

Errors Frequency
0-2 14
3-5 13
6-8 11
9-11 8
12-14 9
Find: a. mean b. variance c. standard deviation.

You are given the following data.

x y
2 14
3 13
4 11
5 8
5 9
7 4
7 3
Find
a. SS(x)
b. SS(y)
c. SS(xy)
d. The linear correlationcoefficient, r
e. The slope b1
f. The y-intercept, b0
g. The equation of the line of best fit.

Elementary statistics and frequency distribution for variance are determined.