Find the mean, median, range, upper quartile, lower quartile, interquartile range,
sample variance,
sample standard deviation, and coefficient of variation.
BridgetJones X
∑
1
2
Memento X
∑
2
2
3 9 14 196
5 25 14 196
7 49 16 256
10 100 18 324
11 121 20 400
13 169 21 441
13 169 21 441
13 169 22 484
14 196 23 529
15 225 24 576
15 225 25 625
16 256 27 729
16 256 28 784
18 324 30 900
19 361 31 961
19 361 31 961
20 400 32 1024
22 484 35 1225
23 529 36 1296
24 576 37 1369
( X
∑
1
)= 296 X
∑
1
2
= 5004
( X
∑
2
) = 505 X
∑
2
2
= 13717
n=20 n=20
A.
Chi Square Analysis: Afraid to Walk at Night By Gender
Afraid to walk
at night
Men
Women
No
150
91
241
Yes
30
68
98
Total
180
159
N=339
The null hypothesis is that being afraid to walk at night is independent of whether or not a person is
male or female.
In other words, a woman is equally likely to be afraid to walk at night than men.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentiFind Chi Square obtained: Below is a sample table to use to organize data:
Observed
Expected
(obs–exp)
(obs–exp)
2
(obs–exp)
2
exp
ii.
Find Chi square critical with .05 level of significance and 1 degree of freedom.
B
This is the end of the preview.
Sign up
to
access the rest of the document.
 '10
 Cohn,SaulUri
 Statistics, Normal Distribution, Null hypothesis, CHI SQUARE, Chi Square Analysis

Click to edit the document details