Consider the following data set: 11 a. Construct a frequency distribution using

Question

Consider the following data set:

11

a. Construct a frequency distribution using classes of 3 up to 5, 5 up to 7, etc.

b. Construct relative frequency, cumulative frequency, and cumulative relative frequency distributions. (Round "relative frequency" and "cumulative relative frequency" to 2 decimal places.)

c-1. How many of the observations are at least 7 but less than 9?

Number of observations__________?

c-2. How many of the observations are less than 9?

Number of observations_________?

d-1.What percent of the observations are at least 7 but less than 9? (Round your answer to the nearest whole percent.)

Percent of observations__________?

d-2.What percent of the observations are less than 9? (Round your answer to the nearest whole percent.)

Percent of observations___________?

7 4 8 8 5 7 8 4 5 14 6 12 14 9 10 9 6 7 5 8 8 9 7 14 11 10 8 12 13

11

Explanation / Answer

Ordering the data,

4
4
5
5
5
6
6
7
7
7
7
8
8
8
8
8
8
9
9
9
10
10
11
11
12
12
13
14
14
14

a)

b)

c-1.

According to the frequency table,

10. [ANSWER]

**********

c-2.

According to the cumulative frequency table,

17. [ANSWER]

********

d-1.

According to the relative frequency table,

33% [ANSWER]

**************

d-2.

According to the cumulative relative frequency table,

57% [ANSWER]

*************

Class Frequency 3 up to 5 2 5 up to 7 5 7 up to 9 10 9 up to 11 5 11 up to 13 4 13 up to 15 4 Total 30

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