Question

2.4 In the past few years, many states have built casinos and many more are in...

2.4 In the past few years, many states have built casinos and many more are in the process of doing so. Forty adults were asked if building casinos is good for society. Following are the responses of these adults, where G stands for good, B indicates bad, and I mean indifferent or no answer.

B G B B I G B I B B

G B B G B B B G G I

B G B B I G G G B B

I G B B B G G B B G

a. Prepare a frequency distribution table. b. Calculate the relative frequencies and percentages for all categories.

c. What percentage of the adults in this sample said building casinos is good?

d. What percentage of the adults in this sample said building casinos is bad or were indifferent?

e. Draw a bar graph for the frequency distribution. f. Draw a pie chart for the percentage distribution. g. Make a Pareto chart for the percentage distribution

2.18 a. Construct a frequency distribution table for blood glucose levels of male participants using the classes 75–89, 90–104, 105–119, 120–134, and 135–149.

b. Calculate the relative frequency and percentage for each class.

c. Construct a histogram for the percentage distribution of part b.

d. What percentage of the male participants have blood glucose levels more than 119?

e. Prepare the cumulative frequency, cumulative relative frequency, and cumulative percentage distributions using the table of part a.

3.10 The following data give the 2014 profits (in millions of dollars) of the top 10 companies listed in the 2014 Fortune 500 (source: www.fortune.com).

2014 Profits Company

Wal-Mart Stores Exxon Mobil Chevron

Berkshire Hathaway Apple

Phillips 66

General Motors Ford Motor

General Electric Valero Energy

(millions of dollars) 16,022

32,580 21,423 19,476 37,037 3726 5346 7155

13,057 2720

Find the mean and median for these data. Do these data have a mode? Explain

3.17 The following data give the number of patients who visited a walk-in clinic on each of 20 randomly selected days.

23 37 26 19 33 22 30 42 24 26 28 32 37 29 38 24 35 20 34 38

a. Calculate the mean, median, and mode for these data. b. Calculate the 15% trimmed mean for these data.

Homework Answers

Answer #1

2.4)

a) Frequency : it is count of each category

b) Relative frequency = frequency / total frequency

Percentage = relative frequency * 100

c) percentage of the adults in this sample said building casinos is good = 35%

d) percentage of the adults in this sample said building casinos is bad or were indifferent = 52.5%+12.5% = 65%

e)

Bar chart :

Pie chart :

Pareto chart :

To draw Pareto chart , we need to find cumulative %

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