Question 1

A histogram is an effective tool for graphically describing a joint frequency distribution.

Accepted Answer

A) True 
 B)False  False

Question 2

Recently a survey was conducted in which customers of a large insurance company were asked to indicate the number of speeding tickets they had received in the past three years.The data in this case would most likely be analyzed using a frequency distribution with the data grouped into classes such as 0-2,3-5,6-8,etc.

Accepted Answer

A) True 
 B)False  False

Question 3

A joint frequency distribution is used to describe the number of occurrences where two observations in a data set have the same value.

Accepted Answer

A) True 
 B)False  False

Question 4

A joint frequency distribution can be constructed for either quantitative or qualitative data.

Accepted Answer

A) True 
 B)False

Question 5

A scatter diagram is a line graph without the points connected by a line.

Accepted Answer

A) True 
 B)False

Question 6

A study was recently conducted in which makers of toothpaste tracked sales for the month at different stores in a market area.The variable of interest was the number of units sold.The numbers ranged from 1,200 to 22,700.In this case,the stems in a stem and leaf diagram might be values such as 1 and 22 while the leaves would be 200 and 700.

Accepted Answer

A) True 
 B)False

Question 7

A frequency histogram should be computed from which type of data?

Accepted Answer

A) Quantitative data 
B) Categorical data 
C) Nominal level data 
D) Ordinal data 
A) Quantitative data 
B) Categorical data 
C) Nominal level data 
D) Ordinal data

Question 8

Explain why a relative frequency histogram is sometimes preferable to a regular frequency histogram.

Accepted Answer

Relative frequencies are used when we ar

Question 9

One of the key differences between a bar chart and histogram is:

Accepted Answer

A) the histogram contains gaps between the bars and the bar chart does not. 
B) a bar chart is used to display a categorical variable and a histogram is used to display the distribution of a quantitative variable. 
C) the histogram shows relative frequency while the bar chart shows frequency. 
D) the bar chart must be vertical while the histogram must be horizontal. 
A) the histogram contains gaps between the bars and the bar chart does not. 
B) a bar chart is used to display a categorical variable and a histogram is used to display the distribution of a quantitative variable. 
C) the histogram shows relative frequency while the bar chart shows frequency. 
D) the bar chart must be vertical while the histogram must be horizontal.

Question 10

A bar chart is the same as a histogram.

Accepted Answer

A) True 
 B)False

Question 11

In a report describing the number of people in the family of each of the 400 employees at a manufacturing company,the frequency count at the value 3 was 220.This means that the relative frequency at the 3 level is .44.

Accepted Answer

A) True 
 B)False

Question 12

Joint frequency distributions are used to display:

Accepted Answer

A) the histograms of two variables analyzed simultaneously. 
B) the number of occurrences at each of the possible joint occurrences of two variables. 
C) the cumulative distribution of a variable with two possible outcomes. 
D) the relative frequency of two variables. 
A) the histograms of two variables analyzed simultaneously. 
B) the number of occurrences at each of the possible joint occurrences of two variables. 
C) the cumulative distribution of a variable with two possible outcomes. 
D) the relative frequency of two variables.

Question 13

In constructing a histogram for a joint frequency distribution,the histogram will have the most meaning for the decision maker if there are no gaps between the bars on the histogram.

Accepted Answer

A) True 
 B)False

Question 14

In a scatter plot the points should always be connected with a line.

Accepted Answer

A) True 
 B)False

Question 15

In forming the classes for a frequency distribution and histogram,suppose there were a number of empty classes.You should:

Accepted Answer

A) increase the class width. 
B) decrease the class width. 
C) keep the current class width. 
D) use an ogive instead. 
A) increase the class width. 
B) decrease the class width. 
C) keep the current class width. 
D) use an ogive instead.

Question 16

A stem and leaf diagram is most similar to a bar chart.

Accepted Answer

A) True 
 B)False

Question 17

The Grangeville Power Company has four classifications for its customers.For each customer classification,the company tracks the total amount of electricity used during the year.Which of the following types of graphs would be most appropriate to use?

Accepted Answer

A) A horizontal bar chart 
B) A vertical bar chart 
C) Both A and B would be appropriate. 
D) A histogram 
A) A horizontal bar chart 
B) A vertical bar chart 
C) Both A and B would be appropriate. 
D) A histogram

Question 18

If you have constructed a joint frequency distribution manually and now wish to convert it to a joint relative distribution,the proper method is to divide each cell frequency by the cell's row total.

Accepted Answer

A) True 
 B)False

Question 19

Roscoe and Associates makes computer software for use in the telecommunications industry.Recently,managers at the company collected data for the year 2001 on three variables: total dollars spent on research and development,total sales dollars,and total employee salaries.To graphically present these three variables,the managers would be justified in using a line chart with all three variables plotted.

Accepted Answer

A) True 
 B)False

Question 20

A line chart is most appropriate for:

Accepted Answer

A) cross-sectional data. 
B) nominal level data. 
C) ordinal level data. 
D) time-series data. 
A) cross-sectional data. 
B) nominal level data. 
C) ordinal level data. 
D) time-series data.

A histogram is an effective tool for graphically describing a joint frequency distribution.

A joint frequency distribution is used to describe the number of occurrences where two observations in a data set have the same value.

A joint frequency distribution can be constructed for either quantitative or qualitative data.

A scatter diagram is a line graph without the points connected by a line.

A frequency histogram should be computed from which type of data?

Explain why a relative frequency histogram is sometimes preferable to a regular frequency histogram.

One of the key differences between a bar chart and histogram is:

A bar chart is the same as a histogram.

In a report describing the number of people in the family of each of the 400 employees at a manufacturing company,the frequency count at the value 3 was 220.This means that the relative frequency at the 3 level is .44.

Joint frequency distributions are used to display:

In constructing a histogram for a joint frequency distribution,the histogram will have the most meaning for the decision maker if there are no gaps between the bars on the histogram.

In a scatter plot the points should always be connected with a line.

In forming the classes for a frequency distribution and histogram,suppose there were a number of empty classes.You should:

A stem and leaf diagram is most similar to a bar chart.

The Grangeville Power Company has four classifications for its customers.For each customer classification,the company tracks the total amount of electricity used during the year.Which of the following types of graphs would be most appropriate to use?

If you have constructed a joint frequency distribution manually and now wish to convert it to a joint relative distribution,the proper method is to divide each cell frequency by the cell's row total.

A line chart is most appropriate for:

The Where,Why,and How of Data Collection

Describing Data Using Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Introduction to Continuous Probability Distributions

Introduction to Sampling Distributions

Estimating Single Population Parameters

Introduction to Hypothesis Testing

Estimation and Hypothesis Testing for Two Population Parameters

Hypothesis Tests and Estimation for Population Variances

Analysis of Variance

Goodness-Of-Fit Tests and Contingency Analysis

Introduction to Linear Regression and Correlation Analysis

Multiple Regression Analysis and Model Building

Analyzing and Forecasting Time-Series Data

Introduction to Nonparametric Statistics

Introduction to Quality and Statistical Process Control

Filters

Exam 2: Graphs,Charts and Tablesdescribing Your Data

A histogram is an effective tool for graphically describing a joint frequency distribution.

A joint frequency distribution is used to describe the number of occurrences where two observations in a data set have the same value.

A joint frequency distribution can be constructed for either quantitative or qualitative data.

A scatter diagram is a line graph without the points connected by a line.

A frequency histogram should be computed from which type of data?

Explain why a relative frequency histogram is sometimes preferable to a regular frequency histogram.

One of the key differences between a bar chart and histogram is:

A bar chart is the same as a histogram.

In a report describing the number of people in the family of each of the 400 employees at a manufacturing company,the frequency count at the value 3 was 220.This means that the relative frequency at the 3 level is .44.

Joint frequency distributions are used to display:

In constructing a histogram for a joint frequency distribution,the histogram will have the most meaning for the decision maker if there are no gaps between the bars on the histogram.

In a scatter plot the points should always be connected with a line.

In forming the classes for a frequency distribution and histogram,suppose there were a number of empty classes.You should:

A stem and leaf diagram is most similar to a bar chart.

The Grangeville Power Company has four classifications for its customers.For each customer classification,the company tracks the total amount of electricity used during the year.Which of the following types of graphs would be most appropriate to use?

If you have constructed a joint frequency distribution manually and now wish to convert it to a joint relative distribution,the proper method is to divide each cell frequency by the cell's row total.

A line chart is most appropriate for:

The Where,Why,and How of Data Collection

Describing Data Using Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Introduction to Continuous Probability Distributions

Introduction to Sampling Distributions

Estimating Single Population Parameters

Introduction to Hypothesis Testing

Estimation and Hypothesis Testing for Two Population Parameters

Hypothesis Tests and Estimation for Population Variances

Analysis of Variance

Goodness-Of-Fit Tests and Contingency Analysis

Introduction to Linear Regression and Correlation Analysis

Multiple Regression Analysis and Model Building

Analyzing and Forecasting Time-Series Data

Introduction to Nonparametric Statistics

Introduction to Quality and Statistical Process Control

Filters