Question

The following is data on the Survey of Study Habits and Attitudes (SSHA) scores for 18 female college students.   

The test evaluates motivation, study habits, and attitudes toward school. Create an appropriate frequency distribution to

describe the data set. Interpret the results.

Student #	Score
9	101
10	103
2	109
4	115
11	126
12	126
16	129
3	137
13	137
6	140
18	148
5	152
1	154
7	154
14	165
15	165
8	178
17	200

Answer 1

Using Sturge's rule, number of classes K = 1+3.322*log(18)(base 10)

So, K = 1+3.322*log(18)

=5.17~5

So, 5 classes will be constructed. Class width=Range/5=(200-101)/5=99/5=20 approximately

Hence inclusive classes are built with width 20. First class is 101-120. Then, 121-140 and so on.

Excel file histogram and frequency distribution is enclosed.

The histogram shows that data is right skewed. This means that mean of data is more than median and mode. The average score of females is around 155. maximum girls have a score of 120 to 140. More of girls have higher score indicating good study habits, are motivated and

good attitude towards school.