Chapter2

# Chapter2 - Self Assessment for Chapter 2 1 Click on Begin...

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Self Assessment for Chapter 2 1 1. Click on “Begin Assessment” button. 2. Scroll down to begin quiz.

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Self Assessment for Chapter 2 2 1. Find the median of the following 9 numbers: 67 63 43 54 77 69 68 55 85. 2. Refer to the above data. Suppose that the last data point is actually 115 instead of 85. What eﬀect would that have on our value for the median of the dataset? increase the value of the median. decrease the value of the median. not change the value of the median.
Self Assessment for Chapter 2 3 3. Suppose that the last data point is 115 instead of 85 as above stated. What eﬀect would that have on our value for the mean of the dataset? increase the value of the mean. decrease the value of the mean. not change the value of the mean. 4. For the dataset, “sales prices of homes in Los Ange- les,” should you use the mean or the median to de- scribe the center? 5. For the dataset, “incomes for people in the United States,” should you use the mean or the median to de- scribe the center?

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Self Assessment for Chapter 2 4 6. For the dataset, “volumes of milk dispensed into 2-gallon milk cartons,” should you use the mean or the median to describe the center?
Self Assessment for Chapter 2 5 7. Below you have a boxplot for the tar content of 25 diﬀerent cigarettes. What is a plausible set of values for the ﬁve-number summary? 0 5 10 15 Tar Content (mg) Min=13, Q1=10, Median=12.6, Q3=14, Max=15 Min=1, Q1=8.5, Median=12.6, Q3=15, Max=17 Min=1, Q1=8.5, Median=11.5, Q3=13, Max=15 Min=8.5, Q1=10, Median=11.5, Q3=15, Max=17

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Self Assessment for Chapter 2 6 8. Look at the above boxplot. The shape of the distrib- ution can be described as: bi-modal left-skewed right-skewed symmetric uniform
Self Assessment for Chapter 2 7 9. Look at the following side-by-side boxplots and com- pare the female and male shoulder girth. 0 1 Gender (0=Female, 1=Male) 80 90 100 110 120 130 Shoulder girth (cm) Females have a typically smaller shoulder girth than males. Females have a typically larger shoulder girth than males. Females and males have about the same shoulder girths.

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Self Assessment for Chapter 2 8 10. Look at the following side-by-side boxplots and com- pare the female and male thigh thickness. 0 1
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Chapter2 - Self Assessment for Chapter 2 1 Click on Begin...

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