You are one of the researchers on a research project that addresses adult stress
ID: 3305513 • Letter: Y
Question
You are one of the researchers on a research project that addresses adult stress and anxiety. You are specifically interested in gender differences in anxiety related to the predicted zombie apocalypse. Therefore, you administer the Manifest Anxiety Scale (MAS) to 30 males and 30 females at a local university after a video about zombies. A MAS score of "0" represents a normal anxiety level. Here are the MAS scores: 47 49 44 29 35 39 21 15 10 11 40 10 32 21 43 19 40 42 47 34 18 23 46 19 15 38 41 21 45 10 47 38 8 16 41 15 25 47 12 17 49 27 12 41 16 37 24 23 15 49 31 25 47 39 30 44 9 30 24 9.
Your team wants you to construct a grouped frequency distribution where i = 5 using the data in question 1. What is your exact calculation (before rounding) for the number of CIs?
Explanation / Answer
No of class intervals =Range / i =(49-8)/5=8.2~9 number of CIs
The frequency table as follows
CI
Frequency
5 10
3
10 15
6
15 20
10
20 25
7
25 30
4
30 35
5
35 40
6
40 45
9
45 50
10
CI
Frequency
5 10
3
10 15
6
15 20
10
20 25
7
25 30
4
30 35
5
35 40
6
40 45
9
45 50
10
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