Homework 2 - Chapter 2 Frequency Distributions

clearly label each calculation and/or step.

1. For the following set of scores: 9, 10, 7, 8, 15, 11, 13, 12, 9, 10, 14, 13, 10, 10, 11, 7, 12, 12, 14, 13

1a. Place the scores in a frequency distribution table. Include columns for proportion and percentage in your table.

1b. n = ?

2. For the following set of scores: 2, 6, 4, 4, 3, 6, 7, 5, 4, 8, 4, 5, 8, 3, 5, 5, 7, 6, 1, 4

2a. Place the scores in a frequency distribution table. Include columns for proportion and percentage in your table.

2b. n = ?

3. You are interested in how much time you spend on Instagram, so you recorded the number of minutes spent browsing your newsfeed each day for three weeks. You obtain the following data:

35, 62, 25, 29, 37, 27, 64, 17, 24, 46, 14, 29, 28, 54, 17, 39, 32, 39, 73, 41, 23

3a. make a grouped frequency distribution table that (i) has the best possible class interval width and (ii) an appropriate number of class intervals.

3b. Describe the shape of the distribution.

3c. For each of class interval, identify the upper and lower real limits.

4. The following scores are the ages for a random sample of n = 32 drivers who were issued parking tickets in Chicago during 2019. Determine the best interval width and place the scores in a grouped frequency distribution table. From looking at your table, does it appear that tickets are issued equally across age groups?

57, 30, 45, 59, 39, 53, 28, 19, 34, 21, 34, 38, 52, 29, 64, 39, 22, 44, 46, 26, 56, 20, 33, 58, 32, 25, 48, 22, 51, 26, 63, 51

4a. Construct a frequency distribution table to organize the scores.

4b. Draw a frequency distribution histogram for these data.

5. For the following set of scores:7, 5, 6, 4, 4, 3, 8, 9, 4, 7, 5, 5, 6, 9, 4, 7, 5, 10, 6, 8, 5, 6, 3, 4, 8, 5

5a. Construct a frequency distribution table

5b. Sketch a histogram showing the distribution