MATH225 Week 2 Assignment Frequency Tables (July 2019)

MATH 225 Statistical Reasoning for the Health Sciences

Week 2 Assignment Frequency Tables

Question William wishes to view a frequency table for grouped data using his monthly credit card statements for the last 20 months, shown below. Construct the table for William using six classes.

1184, 1247, 945, 1124, 1034, 1352, 1025, 1439, 1136, 1439, 1368, 1057, 1130, 1259, 1256, 1381, 838, 1342, 842, 1395

Question A small startup company wishes to know how many hours, per week, that its employees spend commuting to and from work. The number of hours for each employee are shown below. Construct a frequency table for grouped data using four classes.

9, 18, 18, 14, 13, 4, 12, 9, 13, 10, 21, 12, 19, 20, 13, 3, 5, 20, 17, 1

Question As a member of a marketing team, you have been tasked with determining the number of DVDs that people have rented over the past six months. Their responses are summarized in the relative frequency table below.

What is the cumulative relative frequency of customers who rent 27 or fewer DVDs?

Question A group of students were surveyed about the number of states they have visited (including their own). Their responses are summarized in the relative frequency table below.

What is the cumulative relative frequency of students that have visited 3 or fewer states?

Question Given the relative frequency table below, which of the following is the corresponding cumulative relative frequency table?

Value

Frequency

4

0.35

5

0.2

6

0.05

7

0.4

Value Frequency

4 0.3

5 0.6

6 0.65

7 1

Value Frequency

4 0.35

5 0.6

6 0.65

7 1

Value Frequency

4 0.3

5 0.55

6 0.6

7 1

Value Frequency

4 0.35

5 0.55

6 0.6

7 1

Question A group of students were surveyed about the number of siblings they have. The frequencies and relative frequencies of their responses are shown in the below.

Complete the cumulative relative frequency table.

Number of Siblings Relative Frequency

0 0.18

1 0.33

2 0.16

3 0.14

4 or more 0.19

Question As the manager of a store, you wish to determine the amount of money that people who visit this store are willing to spend on impulse buys on products placed near the checkout register. You sample twenty individuals and records their responses. Construct a frequency table for grouped data using five classes.

8,18,15,10,29,4,15,2,4,9,16,14,13,8,25,25,27,1,15,24

Question A data set is summarized in the frequency table below. Using the table, determine the number of values less than or equal to 5. Give your answer as a single number. For example if you found the number of values was 19, you would enter 19.

Value Frequency

3 9

4 4

5 3

6 7

7 6

8 3

9 3

10 5

11 4