Chapter 1: Q 1.2. (page 31)
The Fathom dot plot displays data on the number of siblings reported by each student in a statistics class.

Describe the center of the distribution.
Short Answer
The centre of distribution in this graph is 2.
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Chapter 1: Q 1.2. (page 31)
The Fathom dot plot displays data on the number of siblings reported by each student in a statistics class.

Describe the center of the distribution.
The centre of distribution in this graph is 2.
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Which of the following bar graphs is equivalent to the pie chart in Question T1.2?

C-sections Do male doctors perform more cesarean sections (C-sections) than female doctors? A study in Switzerland examined the number of cesarean sections (surgical deliveries of babies) performed in a . Section Describing Quantitative Data with Numbers year by samples of male and female doctors. Here are summary statistics for the two distributions:

(a) Based on the computer output, which distribution would you guess has a more symmetrical shape? Explain.
(b) Explain how the IQRs of these two distributions can be so similar even though the standard deviations are quite different.
(c) Does it appear that males perform more C-sections? Justify your answer
Here are the scores on the Survey of Study Habits and Attitudes (SSHA) for 18 first-year college women:

and for 20 first-year college men:

Do these data support the belief that women have better study habits and attitudes toward learning than men? (Note that high scores indicate good study habits and attitudes toward learning.) Follow the four-step process.
Make a graph to display the marginal distribution. Describe what you see
Do women study more than men? We asked the students in a large first-year college class how many minutes they studied on a typical weeknight. Here are
the responses of random samples of women and men from the class:

(a) Examine the data. Why are you not surprised that most responses are multiples of 10 minutes? Are there any responses you consider suspicious?
(b) Make a back-to-back stem plot to compare the two samples. Does it appear that women study more than men (or at least claim that they do)? Justify your answer.
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