Problem 40BSC
Finding Standard Deviation from a Frequency Distribution. In Exercises,find the standard deviation of sample data summarized in a frequency distribution table by using the formula befaw, where x represents the class midpoint, f represents the class frequency, and n represents the total number ofsamph values. Aho, compare the computed standard deviations to these standard deviations obtained by using Formula 3-4 with the original list of data values: 9.7years.
Years President Lived after First Inauguration |
Frequency |
0–4 |
8 |
5–9 |
2 |
10–14 |
5 |
15–19 |
7 |
20–24 |
4 |
25–29 |
6 |
30–34 |
0 |
35–39 |
1 |
Solution 40BSC
From the given information, the frequency distribution of years President lived after first inauguration is
|
Years President Lived after first Inauguration |
Frequency |
0 – 4 |
8 |
5 – 9 |
2 |
10 – 14 |
5 |
15 – 19 |
7 |
20 – 24 |
4 |
25 – 29 |
6 |
30 – 34 |
0 |
35 – 39 |
1 |
