The ordered array below resulted from taking a sample of 20 telephone sales peop
ID: 3251636 • Letter: T
Question
The ordered array below resulted from taking a sample of 20 telephone sales people and finding out how many sales they made in a two-hour period. Sales: 1 1 3 4 5 5 6 6 6 7 8 8 8 9 9 9 10 10 13 18 If the frequency distribution for the sales data is constructor using "1 but less than 4" as the first class, find the frequency of the "4 but less than 7" class. A. 4 B. 5 C. 6 D. 7 If the frequency distribution for the sales data is constructed using "1 but less than 4" as the first class, find the relative frequency of the "10 but less than 13" class. A. 2 B. 0.90 C. 0.18 D. 0.10 If the frequency distribution for the sales data is constructed using "1 but less than 4" as the first class, find the cumulative frequency of the "7 but less than 10" class. A. 7 B. 16 C. 18 D. 35 If the frequency distribution for the sales data is constructed using "1 but less than 4" as the first class, find the cumulative relative frequency of the "7 but less than 10" class. A. 0.95 B.0.90 C. 0.80 D. 0.35Explanation / Answer
We have frequency disribution table as below :
2. Frequency of the " 4 but less than 7" class = 6
Correct option is C. 6 .
3. relative frequency of the "10 but less than 13" class = 0.10
The correct option is D.0.10
4. Cumulative frequency of the " 7 but less than 10" class = 16
Correct option is B. 16
5. cumulative relative frequency of the " 7 but less than 10" class = 0.8
Correct option is C. 0.80.
classes frequency f cumulative frequency relative frequency cumulative Relaive frequency 1 - < 4 3 3 0.15 0.15 4 - <7 6 9 0.3 0.45 7 - <10 7 16 0.35 0.8 10 - <13 2 18 0.1 0.9 13 - <16 1 19 0.05 0.95 16 - <19 1 20 0.05 1