Question

Answer each part of the problem (A-G) in the text box below. Round all answers to the nearest tenth (1 decimal place).

In 7 of 25 districts of a large city, the numbers of police officers at each of the 7 districts are: 24, 29, 24, 30, 23, 38, 42

A. Find the mean
B. Find the median
C. Find the mode
D. Find the midrange
E. Find the range
F. Find the variance
G. Find the standard deviation

Answer 1

a)

mean =30.0

b)

median =middle value=4th value=29

c)

mode=24

d)

midrange =(max+min)./2=(23+42)/2=32.5

e)

range =max-min=42-23=19

f)

variance=55   ( please try 41.25 if finite correction factor needs to be included)

g)

std deviation=7.416 (please try 6.423 if finite correction factor needs to be included)