Chapter 1: Q 4.2. (page 41)
Draw a more meaningful graph of the first-name length data from Caution
Short Answer
The bar graph has varied with students on the scale and length on the scale.
Chapter 1: Q 4.2. (page 41)
Draw a more meaningful graph of the first-name length data from Caution
The bar graph has varied with students on the scale and length on the scale.
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Get started for freeBuying music online Young people are more likely than older folk to buy music online. Here are the percent's of people in several age groups who bought music online in :
(a) Explain why it is not correct to use a pie chart to display these data.
(b) Make a bar graph of the data. Be sure to label your axes and title your graph.
You have data on the weights in grams of baby pythons. The mean weight is 31.8 and the standard deviation of the weights is . The correct units for the standard deviation are
(a) no units—it’s just a number.
(b) grams.
(c) grams squared.
(d) pythons.
(e) pythons squared
The histogram below shows the distribution of the percent of women aged and over who have never married in each of the states and the District of Columbia.
The leftmost bar in the histogram covers percent of never-married women ranging from about
(a)
(d)
(b)
(e) None of these.
(c)
About 1.6 million first-year students enroll in colleges and universities each year. What do they plan to study? The graph displays data on the percent of first-year students who plan to major in several discipline areas.
Would it be correct to describe this distribution as right-skewed? Why or why not?
Snowmobiles in the park Yellowstone National Park surveyed a random sample of winter visitors to the park. They asked each person whether they owned, rented, or had never used a snowmobile. Respondents were also asked whether they belonged to an environmental organization (like the Sierra Club). The two-way table summarizes the survey responses.
Do these data provide convincing evidence of an association between environmental club membership and snowmobile use for the population of visitors to Yellowstone National Park? Follow the four-step process.
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