Question 1

The average age in a sample of 90 students at City College is 20. From this sample, it can be concluded that the average age of all the students at City College _____.

Accepted Answer

A)  must be more than 20, since the population is always larger than the sample 
B)  must be less than 20, since the sample is only a part of the population 
C)  could not be 20 
D)  could be larger, smaller, or equal to 20 
A)  must be more than 20, since the population is always larger than the sample 
B)  must be less than 20, since the sample is only a part of the population 
C)  could not be 20 
D)  could be larger, smaller, or equal to 20

Question 2

When the data are labels or names used to identify an attribute of the elements, the variable has which scale of measurement?

Accepted Answer

A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio 
A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio

Question 3

Statistical studies in which researchers control variables of interest are _____ studies.

Accepted Answer

A)  experimental 
B)  control observational 
C)  non-experimental 
D)  observational 
A)  experimental 
B)  control observational 
C)  non-experimental 
D)  observational

Question 4

In a post office, the mailboxes are numbered from 1 to 5,000. These numbers represent _____.

Accepted Answer

A)  categorical data 
B)  time series data 
C)  cross-sectional data 
D)  quantitative data 
A)  categorical data 
B)  time series data 
C)  cross-sectional data 
D)  quantitative data

Question 5

Which of the following is NOT an example of a firm that sells or leases business database services to clients?

Accepted Answer

A)  Dun & Bradstreet 
B)  Bloomberg 
C)  U.S. Census Bureau 
D)  Dow Jones and Company 
A)  Dun & Bradstreet 
B)  Bloomberg 
C)  U.S. Census Bureau 
D)  Dow Jones and Company

Question 6

Categorical data _____.

Accepted Answer

A)  are always nonnumeric 
B)  may be either numeric or nonnumeric 
C)  are always numeric 
D)  indicate either how much or how many 
A)  are always nonnumeric 
B)  may be either numeric or nonnumeric 
C)  are always numeric 
D)  indicate either how much or how many

The average age in a sample of 90 students at City College is 20. From this sample, it can be concluded that the average age of all the students at City College _____.

When the data are labels or names used to identify an attribute of the elements, the variable has which scale of measurement?

Statistical studies in which researchers control variables of interest are _____ studies.

In a post office, the mailboxes are numbered from 1 to 5,000. These numbers represent _____.

Which of the following is NOT an example of a firm that sells or leases business database services to clients?

Categorical data _____.

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence, and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters

Exam 1: Data and Statistics

The average age in a sample of 90 students at City College is 20. From this sample, it can be concluded that the average age of all the students at City College _____.

When the data are labels or names used to identify an attribute of the elements, the variable has which scale of measurement?

Statistical studies in which researchers control variables of interest are _____ studies.

In a post office, the mailboxes are numbered from 1 to 5,000. These numbers represent _____.

Which of the following is NOT an example of a firm that sells or leases business database services to clients?

Categorical data _____.

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence, and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters