A sociologist recently conducted a survey of citizens over 60 years of age who have net worths too high to qualify for Medicaid but have no private health insurance. The ages of the 25 uninsured senior citizens were as follows: $\begin{array} { l l l l l l l l l l l l l } 68 & 73 & 66 & 76 & 86 & 74 & 61 & 89 & 65 & 90 & 69 & 92 & 76 \end{array}$ $\begin{array} { l l l l l l l l l l l l } 62 & 81 & 63 & 68 & 81 & 70 & 73 & 60 & 87 & 75 & 64 & 82 \end{array}$ Suppose the mean and standard deviation are 74.04 and 9.75, respectively. If we assume that the distribution of ages is mound-shaped and symmetric, what percentage of the respondents will be between 64.29 and 93.54 years old?

A) approximately 68% B) approximately 81.5% C) approximately 95% D) approximately 84% A) approximately 68% B) approximately 81.5% C) approximately 95% D) approximately 84%

The output below displays the mean and median for the state high school dropout rates in year 1 and in year 5. \[\begin{array} { l r r } & \text { Year 1 } & \text { Year 5 } \\ \text { N } & 51 & 51 \\ \text { MEAN } & 28.94 & 26.53 \\ \text { MEDIAN } & 27.78 & 25.64 \end{array}\] Interpret the year 5 median dropout rate of 25.64.

A) Half of the 51 states had a dropout rate below 25.64%. B) Half of the 51 states had a dropout rate of 25.64%. C) Most of the 51 states had a dropout rate close to 25.64%. D) The most frequently observed dropout rate of the 51 states was 25.64%. A) Half of the 51 states had a dropout rate below 25.64%. B) Half of the 51 states had a dropout rate of 25.64%. C) Most of the 51 states had a dropout rate close to 25.64%. D) The most frequently observed dropout rate of the 51 states was 25.64%.

Exam 2: Methods for Describing Sets of Data

Explore all topics

In a distribution that is skewed to the right, what is the relationship of the mean, median, and mode? A) median > mean > mode B) mode $>$ median $>$ mode C) mode $>$ mean $>$ median D) mean > median > mode

(Short Answer)

4.9/5

(37)

Question 181

A sociologist recently conducted a survey of citizens over 60 years of age who have net worths too high to qualify for Medicaid but have no private health insurance. The ages of the 25 uninsured senior citizens were as follows: 68 73 66 76 86 74 61 89 65 90 69 92 76 62 81 63 68 81 70 73 60 87 75 64 82 Suppose the mean and standard deviation are 74.04 and 9.75, respectively. If we assume that the distribution of ages is mound-shaped and symmetric, what percentage of the respondents will be between 64.29 and 93.54 years old?

(Multiple Choice)

4.9/5

(33)

Question 182

The amount spent on textbooks for the fall term was recorded for a sample of five university students - $400, $350, $600, $525, and $450. Calculate the value of the sample range for the data.

(Multiple Choice)

4.8/5

(26)

Question 183

The calculator screens summarize a data set. a. Identify the lower and upper quartiles of the data set. b. Find the interquartile range. c. Is there reason to suspect that the data may contain an outlier? Explain.

(Essay)

4.8/5

(39)

Question 184

Given the sample variance of a distribution, explain how to find the standard deviation.

(Essay)

4.9/5

(30)

Question 185

The bar graph shows the political affiliation of 1000 registered U.S. voters. What percentage of the voters belonged to one of the traditional two parties (Democratic or Republican)?

(Multiple Choice)

4.8/5

(32)

Question 186

In a summary of recent real estate sales, the median home price is given as $325,000. What percentile corresponds to a home price of $325,000?

(Short Answer)

4.8/5

(34)

Question 187

The output below displays the mean and median for the state high school dropout rates in year 1 and in year 5. Year 1 Year 5 N 51 51 MEAN 28.94 26.53 MEDIAN 27.78 25.64 Interpret the year 5 median dropout rate of 25.64.

(Multiple Choice)

4.8/5

(45)

Question 188

Showing 181 - 188 of 188

In a distribution that is skewed to the right, what is the relationship of the mean, median, and mode? A) median > mean > mode B) mode $>$ median $>$ mode C) mode $>$ mean $>$ median D) mean > median > mode

The amount spent on textbooks for the fall term was recorded for a sample of five university students - $400, $350, $600, $525, and $450. Calculate the value of the sample range for the data.

The calculator screens summarize a data set. a. Identify the lower and upper quartiles of the data set. b. Find the interquartile range. c. Is there reason to suspect that the data may contain an outlier? Explain.

Given the sample variance of a distribution, explain how to find the standard deviation.

The bar graph shows the political affiliation of 1000 registered U.S. voters. What percentage of the voters belonged to one of the traditional two parties (Democratic or Republican)?

In a summary of recent real estate sales, the median home price is given as $325,000. What percentile corresponds to a home price of $325,000?

The output below displays the mean and median for the state high school dropout rates in year 1 and in year 5. Year 1 Year 5 N 51 51 MEAN 28.94 26.53 MEDIAN 27.78 25.64 Interpret the year 5 median dropout rate of 25.64.

Statistics, Data, and Statistical Thinking

Probability

Random Variables and Probability Distributions

Sampling Distributions

Inferences Based on a Single Sample: Estimation With Confidence Intervals

Inferences Based on a Single Sample: 355 Tests of Hypotheses

Inferences Based on Two Samples: Confidence Intervals and Tests of Hypotheses

Design of Experiments and Analysis of Variance

Categorical Data Analysis

Simple Linear Regression

Multiple Regression and Model Building

Methods for Quality Improvement: Statistical Process Control Available on CD

Time Series: Descriptive Analyses, Models, and Forecasting Available on CD

Nonparametric Statistics Available on CD

Filters

Exam 2: Methods for Describing Sets of Data

In a distribution that is skewed to the right, what is the relationship of the mean, median, and mode? A) median > mean > mode B) mode >>> median >>> mode C) mode >>> mean >>> median D) mean > median > mode

The amount spent on textbooks for the fall term was recorded for a sample of five university students - $400, $350, $600, $525, and $450. Calculate the value of the sample range for the data.

The calculator screens summarize a data set. a. Identify the lower and upper quartiles of the data set. b. Find the interquartile range. c. Is there reason to suspect that the data may contain an outlier? Explain.

Given the sample variance of a distribution, explain how to find the standard deviation.

The bar graph shows the political affiliation of 1000 registered U.S. voters. What percentage of the voters belonged to one of the traditional two parties (Democratic or Republican)?

In a summary of recent real estate sales, the median home price is given as $325,000. What percentile corresponds to a home price of $325,000?

The output below displays the mean and median for the state high school dropout rates in year 1 and in year 5. Year 1 Year 5 N 51 51 MEAN 28.94 26.53 MEDIAN 27.78 25.64 Interpret the year 5 median dropout rate of 25.64.

Statistics, Data, and Statistical Thinking

Probability

Random Variables and Probability Distributions

Sampling Distributions

Inferences Based on a Single Sample: Estimation With Confidence Intervals

Inferences Based on a Single Sample: 355 Tests of Hypotheses

Inferences Based on Two Samples: Confidence Intervals and Tests of Hypotheses

Design of Experiments and Analysis of Variance

Categorical Data Analysis

Simple Linear Regression

Multiple Regression and Model Building

Methods for Quality Improvement: Statistical Process Control Available on CD

Time Series: Descriptive Analyses, Models, and Forecasting Available on CD

Nonparametric Statistics Available on CD

Filters

In a distribution that is skewed to the right, what is the relationship of the mean, median, and mode? A) median > mean > mode B) mode $>$ median $>$ mode C) mode $>$ mean $>$ median D) mean > median > mode