Exam 3: Graphical Descriptive Techniques II

Internet Classes A survey of 25 students was conducted to determine how they rate the quality of Internet classes.Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality).The stem-and-leaf display of the data is shown below. -{Internet Classes Narrative} What percentage of the students rated the overall quality of on-line classes as being below 40?

(Short Answer)

4.9/5

(40)

Question 61

If the data in a scatter diagram is scattered completely at random, what do you conclude?

(Multiple Choice)

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Question 62

The scale used on a bar chart does not affect the way the bar chart looks.

(True/False)

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Question 63

Data for calories and salt content (milligrams of sodium) in 17 brands of meat hot dogs are shown in the scatter diagram below.According to this diagram, it appears that hot dogs that are high in sodium are generally low in calories, and hot dogs with low sodium are generally high in calories.

(True/False)

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Question 64

A department store's monthly sales (in thousands of dollars) for the last year were as follows.A histogram should be used to present these data.

(Essay)

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Question 65

If two variables have a strong linear relationship, that means one variable is causing the other variable to go up or down.

(True/False)

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Question 66

Graphical excellence is a term usually applied to techniques that are informative and concise and that impart information clearly to their viewers.

(True/False)

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Question 67

A bar chart can be made to look deceptive if the Y-axis starts at a number other than zero.

(True/False)

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Question 68

Compare the two histograms below.Which statement is true?

(Multiple Choice)

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Question 69

Briefly discuss the difference between cross-sectional data and time-series data.

(Essay)

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Question 70

The following graph shows pepper prices throughout a 12-month period. Suppose you made a new graph of the same data, where the maximum value on the Y-axis was changed from 5.0 to 10.0.(Assume everything else stays the same.) Your new graph would appear to have ____ variability in pepper prices compared to the original graph shown above.

(Multiple Choice)

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Question 71

A(n) ____________________ is a table that sorts data into class intervals (categories) and gives the number of observations in each interval (category).

(Short Answer)

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Question 72

According to the stem-and-leaf plot below, this data set is symmetric.

(True/False)

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Question 73

Pie charts only show , not .This means you don't know what the sample size is unless it is stated on the pie chart.

(Short Answer)

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(34)

Question 74

The intervals (classes) in a histogram do not overlap.

(True/False)

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Question 75

Which of the following describes a positive linear relationship between X and Y?

(Multiple Choice)

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Question 76

Test scores The scores on a calculus test for a random sample of 40 students are as follows: -{Test Grades Narrative} Construct frequency and relative frequency distributions for this data set using seven class intervals.Describe the shape of the data set.

(Essay)

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(31)

Question 77

Time series data are often graphically depicted on a line chart, which is a plot of the variable of interest over time.

(True/False)

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Question 78

What does the length of each line of a stem-and-leaf display represent?

(Multiple Choice)

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Question 79

Which of the following is a characteristic of graphical excellence?

(Multiple Choice)

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Question 80

Showing 61 - 80 of 183

If the data in a scatter diagram is scattered completely at random, what do you conclude?

The scale used on a bar chart does not affect the way the bar chart looks.

Data for calories and salt content (milligrams of sodium) in 17 brands of meat hot dogs are shown in the scatter diagram below.According to this diagram, it appears that hot dogs that are high in sodium are generally low in calories, and hot dogs with low sodium are generally high in calories.

A department store's monthly sales (in thousands of dollars) for the last year were as follows.A histogram should be used to present these data.

If two variables have a strong linear relationship, that means one variable is causing the other variable to go up or down.

Graphical excellence is a term usually applied to techniques that are informative and concise and that impart information clearly to their viewers.

A bar chart can be made to look deceptive if the Y-axis starts at a number other than zero.

Compare the two histograms below.Which statement is true?

Briefly discuss the difference between cross-sectional data and time-series data.

A(n) ____________________ is a table that sorts data into class intervals (categories) and gives the number of observations in each interval (category).

According to the stem-and-leaf plot below, this data set is symmetric.

Pie charts only show , not .This means you don't know what the sample size is unless it is stated on the pie chart.

The intervals (classes) in a histogram do not overlap.

Which of the following describes a positive linear relationship between X and Y?

Test scores The scores on a calculus test for a random sample of 40 students are as follows: -{Test Grades Narrative} Construct frequency and relative frequency distributions for this data set using seven class intervals.Describe the shape of the data set.

Time series data are often graphically depicted on a line chart, which is a plot of the variable of interest over time.

What does the length of each line of a stem-and-leaf display represent?

Which of the following is a characteristic of graphical excellence?

What Is Statistics

Graphical Descriptive Techniques I

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Filters

Exam 3: Graphical Descriptive Techniques II

If the data in a scatter diagram is scattered completely at random, what do you conclude?

The scale used on a bar chart does not affect the way the bar chart looks.

Data for calories and salt content (milligrams of sodium) in 17 brands of meat hot dogs are shown in the scatter diagram below.According to this diagram, it appears that hot dogs that are high in sodium are generally low in calories, and hot dogs with low sodium are generally high in calories.

A department store's monthly sales (in thousands of dollars) for the last year were as follows.A histogram should be used to present these data.

If two variables have a strong linear relationship, that means one variable is causing the other variable to go up or down.

Graphical excellence is a term usually applied to techniques that are informative and concise and that impart information clearly to their viewers.

A bar chart can be made to look deceptive if the Y-axis starts at a number other than zero.

Compare the two histograms below.Which statement is true?

Briefly discuss the difference between cross-sectional data and time-series data.

A(n) ____________________ is a table that sorts data into class intervals (categories) and gives the number of observations in each interval (category).

According to the stem-and-leaf plot below, this data set is symmetric.

Pie charts only show ____________________, not ____________________.This means you don't know what the sample size is unless it is stated on the pie chart.

The intervals (classes) in a histogram do not overlap.

Which of the following describes a positive linear relationship between X and Y?

Test scores The scores on a calculus test for a random sample of 40 students are as follows: -{Test Grades Narrative} Construct frequency and relative frequency distributions for this data set using seven class intervals.Describe the shape of the data set.

Time series data are often graphically depicted on a line chart, which is a plot of the variable of interest over time.

What does the length of each line of a stem-and-leaf display represent?

Which of the following is a characteristic of graphical excellence?

What Is Statistics

Graphical Descriptive Techniques I

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Filters

Pie charts only show , not .This means you don't know what the sample size is unless it is stated on the pie chart.