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# (Solved) MATH225N Week 2 Assignment Frequency Tables

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Question

An instructor asks students to rate their anxiety level on a scale of 1 to 100 (1 being low anxiety and 100 being high anxiety) just before the students take their final exam. The responses are shown below. Construct the table for the instructor using six classes.

48,50,71,58,56,55,53,70,63,74,64,33,34,39,49,60,65,84,54,58

Question

The values and relative frequencies for a set of data are shown below.

Complete the cumulative relative frequency table.

 Data Value Relative Frequency Â Â Â Â Â Â Â Â  Cumulative relative frequency 1 0.19 2 0.35 3 0.29 4 0.17

Question

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

 Value Â Relative Frequency 2 0.23 3 0.33 4 0.24 5 0.2

Question

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

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

Question

A data set is summarized in the frequency table below. Using the table, determine the number of values less than or equal toÂ 7Â in the data set. Give your answer as a single number. For example if you found the number of values wasÂ 16, you would enterÂ 16.

 Value Frequency 3 8 4 4 5 3 6 2 7 2 8 7 9 3 10 6 11 3 12 7

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 record 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 group of students were surveyed about the number of times they went to a movie theatre last year. Their responses are summarized in the relative frequency table below.

What is theÂ cumulativeÂ relative frequency of students that went toÂ 7Â or fewer movies?

 Number of Movies Relative Frequency 0âˆ’1 0.08 2âˆ’3 0.20 4âˆ’5 0.30 6âˆ’7 0.24 8âˆ’9 0.10 10Â or more 0.08

Question

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

 Value Â Frequency 4 0.35 5 0.2 6 0.05 7 0.4

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 4Â or more 0.19

Question

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

 Value Â Frequency 4 0.28 5 0.24 6 0.04 7 0.2 8 0.24

Question

A small start up 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, 20, 12, 19, 20, 13, 3, 5, 20, 17, 1

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.

1312, 1303, 809, 1477, 1263, 1444, 894, 1051, 1485, 1433, 1132, 1221, 1179, 945, 995, 1179, 1172, 1373,Â 906, 955