Question 1

If you wanted to compare the heights of a random sample of 5-year olds in Texas with that of the entire population in the United States, which statistical test would you use?

Accepted Answer

A)  Regression analysis 
B)  One-Sample z- or t-test 
C)  Multiple regression analysis 
D)  Confidence interval B

Question 2

Which P value indicates that there is a less than 10% chance of the observation occurring by chance?

Accepted Answer

A)  < 0.01 
B)  < 0.1 
C)  < 10 
D)  < 0.001 B

Question 3

Calculate and enter the mean, median and mode for the following numbers: 1, 7, 9, 2, 1
Mean ___________
Median ___________
Mode ___________

Accepted Answer

Answers from top to bottom: 4, 2, 1

Question 4

Variables that can have an infinite number of fractional values are called _______________.

Accepted Answer

The answer of Variables that can have an infinite number...

Question 5

This is a statistical measure of the spread of the values of a quantitative variable around the mean.

Accepted Answer

A)  Dispersion 
B)  Range 
C)  Standard deviation 
D)  Median

Question 6

Type I error happens when statistically significant differences are erroneously discovered between two sets of observations when none really existed.

Accepted Answer

A) True 
 B)False

Question 7

This type of distribution is a symmetrical bell-shaped curve that represents the distribution of a quantitative variable.

Accepted Answer

A)  Symmetrical 
B)  Regular 
C)  Even 
D)  Normal

Question 8

The __________________ is the interval between two numeric values within which the true value of a variable is expected to lie with a high level of probability.

Accepted Answer

A)  Probability interval 
B)  Confidence interval 
C)  Chance interval 
D)  Estimation interval

Question 9

This type of variable can only be assigned one of two possible values, such as yes or no.

Accepted Answer

A)  Binary 
B)  Discrete 
C)  Continuous 
D)  Categorical

Question 10

In statistical analyses, ________________ refers to a specific group of individuals who are the primary focus of interest.

Accepted Answer

A)  Community 
B)  Population 
C)  Group of interest 
D)  Epidemiological sample

Question 11

Which of the following is an example of systematic sampling?

Accepted Answer

A)  Selecting people from different cities in Texas 
B)  Selecting a group of hospitals and then obtaining a random sample in each hospital 
C)  Selecting every 10th person who comes into a hospital after 3pm 
D)  Selecting four groups of people from a shopping center and taking a random sample from each

Question 12

Any characteristic, material, or attribute of someone or something that can be measured with or without an instrument or device is known as a:

Accepted Answer

A)  Focus 
B)  Sample 
C)  Variable 
D)  Population

Question 13

Which of the following are examples of continuous variables?

Accepted Answer

A)  Racial/ethnic groups in a population 
B)  Number of books in a library 
C)  Time 
D)  Distance

Question 14

Correlation implies that one of the variables depends on the other.

Accepted Answer

A) True 
 B)False

Question 15

Categorical variables have a numeric value.

Accepted Answer

A) True 
 B)False

Question 16

A hypothesis must be based on a substantial amount of evidence.

Accepted Answer

A) True 
 B)False

Question 17

In statistics, the term ______________ refers to the value that is at the midpoint in a data set when data are arranged in a numerically ascending or descending order.

Accepted Answer

The answer of In statistics, the term ______________ refers to...

Question 18

Which of the following correlation coefficients would indicate a strong a positive relationship between two variables?

Accepted Answer

A)  0.00007 
B)  -0.9 
C)  0.88 
D)  -0.003

Question 19

In statistics, _______________ means the number of times an event, observation, or data value occurs in a data set.

Accepted Answer

A)  Frequency 
B)  Occurrence 
C)  Percentile 
D)  Mean

Question 20

________________ analysis examines the simultaneous relationship of one or more independent variables with another variable, with the assumption that the values of the latter depend on the values of the former.

Accepted Answer

The answer of ________________ analysis examines the simultaneous relationship of...

Exam 13: Basic Statistical Concepts and Tests

If you wanted to compare the heights of a random sample of 5-year olds in Texas with that of the entire population in the United States, which statistical test would you use?

Which P value indicates that there is a less than 10% chance of the observation occurring by chance?

Calculate and enter the mean, median and mode for the following numbers: 1, 7, 9, 2, 1 Mean _____ Median _ Mode _______

Variables that can have an infinite number of fractional values are called _______________.

This is a statistical measure of the spread of the values of a quantitative variable around the mean.

Type I error happens when statistically significant differences are erroneously discovered between two sets of observations when none really existed.

This type of distribution is a symmetrical bell-shaped curve that represents the distribution of a quantitative variable.

The __________________ is the interval between two numeric values within which the true value of a variable is expected to lie with a high level of probability.

This type of variable can only be assigned one of two possible values, such as yes or no.

In statistical analyses, ________________ refers to a specific group of individuals who are the primary focus of interest.

Which of the following is an example of systematic sampling?

Any characteristic, material, or attribute of someone or something that can be measured with or without an instrument or device is known as a:

Which of the following are examples of continuous variables?

Correlation implies that one of the variables depends on the other.

Categorical variables have a numeric value.

A hypothesis must be based on a substantial amount of evidence.

In statistics, the term ______________ refers to the value that is at the midpoint in a data set when data are arranged in a numerically ascending or descending order.

Which of the following correlation coefficients would indicate a strong a positive relationship between two variables?

In statistics, _______________ means the number of times an event, observation, or data value occurs in a data set.

________________ analysis examines the simultaneous relationship of one or more independent variables with another variable, with the assumption that the values of the latter depend on the values of the former.

Exam 13: Basic Statistical Concepts and Tests

If you wanted to compare the heights of a random sample of 5-year olds in Texas with that of the entire population in the United States, which statistical test would you use?

Which P value indicates that there is a less than 10% chance of the observation occurring by chance?

Calculate and enter the mean, median and mode for the following numbers: 1, 7, 9, 2, 1 Mean ___________ Median ___________ Mode ___________

Variables that can have an infinite number of fractional values are called _______________.

This is a statistical measure of the spread of the values of a quantitative variable around the mean.

Type I error happens when statistically significant differences are erroneously discovered between two sets of observations when none really existed.

This type of distribution is a symmetrical bell-shaped curve that represents the distribution of a quantitative variable.

The __________________ is the interval between two numeric values within which the true value of a variable is expected to lie with a high level of probability.

This type of variable can only be assigned one of two possible values, such as yes or no.

In statistical analyses, ________________ refers to a specific group of individuals who are the primary focus of interest.

Which of the following is an example of systematic sampling?

Any characteristic, material, or attribute of someone or something that can be measured with or without an instrument or device is known as a:

Which of the following are examples of continuous variables?

Correlation implies that one of the variables depends on the other.

Categorical variables have a numeric value.

A hypothesis must be based on a substantial amount of evidence.

In statistics, the term ______________ refers to the value that is at the midpoint in a data set when data are arranged in a numerically ascending or descending order.

Which of the following correlation coefficients would indicate a strong a positive relationship between two variables?

In statistics, _______________ means the number of times an event, observation, or data value occurs in a data set.

________________ analysis examines the simultaneous relationship of one or more independent variables with another variable, with the assumption that the values of the latter depend on the values of the former.

Calculate and enter the mean, median and mode for the following numbers: 1, 7, 9, 2, 1 Mean _____ Median _ Mode _______