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Chapter 1: Q. 88 (page 59)

An advertisement for Acme Investments displays the two graphs in Figure 1.14to show the value of Acme鈥檚 product in comparison with the Other Guy鈥檚 product. Describe the potentially misleading visual effect of these comparison graphs. How can this be corrected?

Short Answer

Expert verified

The potentially misleading visual effect of these comparison graphs is the scales of the x-axis and y-axis may be totally different.

Step by step solution

01

Definition 

The following can be the potential misleading visual effects while comparing the graph:

  • The scales of the x-axis and y-axis may be totally different or both graphs.
  • The numbering of the scale may be different for the graphs.
  • The units on the axis may differ for both graphs.
02

Explanation

Since the graph did not have the marked vertical and horizontal axis, it cannot be measured properly. This can be corrected by assigning the properly marked axis for the vertical and horizontal axis.

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Most popular questions from this chapter

1.11 You are going to use the random number generator to generate different types of samples from the data.

This table displays six sets of quiz scores (each quiz counts 10 points) for an elementary statistics class.

Instructions: Use the Random Number Generator to pick samples.

1. Create a stratified sample by column. Pick three quiz scores randomly from each column.

鈼� Number each row one through ten.

鈼� On your calculator, press Math and arrow over to PRB.

鈼� For column 1, Press 5:randInt( and enter 1,10). Press ENTER. Record the number. Press ENTER 2 more

times (even the repeats). Record these numbers. Record the three quiz scores in column one that correspond

to these three numbers.

鈼� Repeat for columns two through six.

鈼� These 18 quiz scores are a stratified sample.

2. Create a cluster sample by picking two of the columns. Use the column numbers: one through six.

鈼� Press MATH and arrow over to PRB.

鈼� Press 5:randInt( and enter 1,6). Press ENTER. Record the number. Press ENTER and record that number.

鈼� The two numbers are for two of the columns.

鈼� The quiz scores (20 of them) in these 2 columns are the cluster sample.

3. Create a simple random sample of 15 quiz scores.

鈼� Use the numbering one through 60.

鈼� Press MATH. Arrow over to PRB. Press 5:randInt( and enter 1, 60).

鈼� Press ENTER 15 times and record the numbers.

鈼� Record the quiz scores that correspond to these numbers.

鈼� These 15 quiz scores are the systematic sample.

4. Create a systematic sample of 12 quiz scores.

鈼� Use the numbering one through 60.

鈼� Press MATH. Arrow over to PRB. Press 5:randInt( and enter 1, 60).

鈼� Press ENTER. Record the number and the first quiz score. From that number, count ten quiz scores and

record that quiz score. Keep counting ten quiz scores and recording the quiz score until you have a sample

of 12 quiz scores. You may wrap around (go back to the beginning).

For the following exercises, identify the type of data that would be used to describe a response (quantitative discrete, quantitative continuous, or qualitative), and give an example of the data. time in line to buy groceries.

Nineteen immigrants to the U.S were asked how many years, to the nearest year, they have lived in the U.S. The data are as follows:

Table 1.35was produced.

a. Fix the errors in Table 1.35. Also, explain how someone might have arrived at the incorrect number(s).

b. Explain what is wrong with this statement: 鈥�47percent of the people surveyed have lived in the U.S. for 5测别补谤蝉.鈥�

c. Fix the statement in b to make it correct.

d. What fraction of the people surveyed have lived in the U.S. five or seven years?

e. What fraction of the people surveyed have lived in the U.S. at most 12years?

f. What fraction of the people surveyed have lived in the U.S. fewer than 12years?

g. What fraction of the people surveyed have lived in the U.S. from five to 20years, inclusive?

What is the population she is interested in?

a. all Lake Tahoe Community College students

b. all Lake Tahoe Community College English students

c. all Lake Tahoe Community College students in her classes

d. all Lake Tahoe Community College math students

The data are the number of machines in a gym. You sample five gyms. One gym has 12machines, one gym has 15machines, one gym has ten machines, one gym has 22machines, and the other gym has 20machines. What type of data is this?
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