Question 1

A researcher is interested in the eating behavior of rats and selects a group of 25 rats to be tested in a research study.The group of 25 rats is an example of a ____.​

Accepted Answer

A)  ​sample
B)  ​statistic
C)  ​population
D)  ​parameterE) B) and D)
F) All of the above

Question 2

In a research study comparing attitude scores for males and females,participant gender is an example of what kind of variable?​

Accepted Answer

A)  ​an independent variable
B)  ​an dependent variable
C)  ​a quasi-independent variable
D)  ​a quasi-dependent variableE) All of the above
F) A) and B)

Question 3

A high school gym teacher records how much time each student requires to complete a one-mile run.This is an example of measuring a continuous variable.​

Accepted Answer

A) True 
 B)False

Question 4

A researcher interested in vocabulary development obtains a sample of three-year-old children to participate in a research study.The average score for the group of 20 is an example of a parameter.​

Accepted Answer

A) True 
 B)False

Question 5

Using letter grades (A,B,C,D,and E) to classify student performance on an exam is an example of measurement on a(n) ____ scale of measurement.​

Accepted Answer

A)  ​nominal
B)  ​ordinal
C)  ​interval
D)  ​ratioE) None of the above
F) All of the above

Question 6

After measuring two individuals,a researcher can say that Tom's score is four points higher than Bill's.The measurements must come from a(n) ____ scale.​

Accepted Answer

A)  ​nominal
B)  ​ordinal
C)  ​interval
D)  ​interval or ratioE) B) and C)
F) A) and B)

Question 7

Recording the number of students who are absent each day at a high school would be an example of measuring a discrete variable.​

Accepted Answer

A) True 
 B)False

Question 8

What is the value of ΣX + 1 for the following scores?​ Scores 1,0,2,4

Accepted Answer

A)  ​8
B)  ​10
C)  ​11
D)  ​14E) All of the above
F) B) and C)

Question 9

For the following scores,Σ(X - 1)= 10.Scores: 1,3,7​

Accepted Answer

A) True 
 B)False

Question 10

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.For this study,what is the independent variable?​

Accepted Answer

A)  ​The students who were given the nutritious breakfast
B)  ​The students who were not given the nutritious breakfast
C)  ​Whether or not a breakfast was given to the students
D)  ​The test scores for the studentsE) A) and B)
F) All of the above

Question 11

What is the final step to be performed when computing Σ(X - 2) 2?​

Accepted Answer

A)  ​Square each value.
B)  ​Subtract 2 points from each score.
C)  ​Sum the squared values.
D)  ​Subtract 22 from each X2 value.E) All of the above
F) B) and C)

Question 12

In an introductory theater class,the professor records from the number of movies students watched the previous year.The teacher is measuring a discrete variable.​

Accepted Answer

A) True 
 B)False

Question 13

Which description provides an example of a continuous variable?​

Accepted Answer

A)  ​The gender of each student in a psychology class
B)  ​The number of males in each class offered by the college
C)  ​The amount of time to solve a problem
D)  ​The number of children in a familyE) A) and B)
F) B) and D)

Question 14

Using the average score to describe a sample is an example of inferential statistics.​

Accepted Answer

A) True 
 B)False

Question 15

To compute (ΣX)2,you first add the scores,then square the total.​

Accepted Answer

A) True 
 B)False

Question 16

Calculate each value requested for the following set of scores: $$\begin{array} { r c } 
\mathrm { X } & \mathrm { Y } \
1 & 5 \
3 & 1 \
0 & - 2 \
2 & - 4
\end{array}$$ 
a. ΣX
b. ΣY
c. ΣXΣY
d. ΣXY

Accepted Answer

The answer of Calculate each value requested for the following...

Exam 1: Introduction to Statistics

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.For this study,what is the independent variable?

Correct Answer
verified

Which description provides an example of a continuous variable?

Correct Answer
verified

What is the final step to be performed when computing Σ(X - 2) 2?

Correct Answer
verified

Calculate each value requested for the following set of scores: $\begin{array} { r c } \mathrm { X } & \mathrm { Y } \\1 & 5 \\3 & 1 \\0 & - 2 \\2 & - 4\end{array}$ a. ΣX b. ΣY c. ΣXΣY d. ΣXY

Correct Answer
verified

A researcher interested in vocabulary development obtains a sample of three-year-old children to participate in a research study.The average score for the group of 20 is an example of a parameter.

Correct Answer
verified

A researcher is interested in the eating behavior of rats and selects a group of 25 rats to be tested in a research study.The group of 25 rats is an example of a ____.

Correct Answer
verified

What is the value of ΣX + 1 for the following scores? Scores 1,0,2,4

Correct Answer
verified

Using letter grades (A,B,C,D,and E) to classify student performance on an exam is an example of measurement on a(n) ____ scale of measurement.

Correct Answer
verified

Using the average score to describe a sample is an example of inferential statistics.

Correct Answer
verified

After measuring two individuals,a researcher can say that Tom's score is four points higher than Bill's.The measurements must come from a(n) ____ scale.

Correct Answer
verified

In a research study comparing attitude scores for males and females,participant gender is an example of what kind of variable?

Correct Answer
verified

To compute (ΣX)²,you first add the scores,then square the total.

Correct Answer
verified

For the following scores,Σ(X - 1)= 10.Scores: 1,3,7

Correct Answer
verified

In an introductory theater class,the professor records from the number of movies students watched the previous year.The teacher is measuring a discrete variable.

Correct Answer
verified

Recording the number of students who are absent each day at a high school would be an example of measuring a discrete variable.

Correct Answer
verified

A high school gym teacher records how much time each student requires to complete a one-mile run.This is an example of measuring a continuous variable.

Correct Answer
verified

Exam 1: Introduction to Statistics

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.For this study,what is the independent variable?​

Correct AnswerverifiedShow Answer

Which description provides an example of a continuous variable?​

Correct AnswerverifiedShow Answer

What is the final step to be performed when computing Σ(X - 2) 2?​

Correct AnswerverifiedShow Answer

Calculate each value requested for the following set of scores: XY15310−22−4\begin{array} { r c } \mathrm { X } & \mathrm { Y } \\1 & 5 \\3 & 1 \\0 & - 2 \\2 & - 4\end{array}X1302​Y51−2−4​ a. ΣX b. ΣY c. ΣXΣY d. ΣXY

Correct AnswerverifiedShow Answer

A researcher interested in vocabulary development obtains a sample of three-year-old children to participate in a research study.The average score for the group of 20 is an example of a parameter.​

Correct AnswerverifiedShow Answer

A researcher is interested in the eating behavior of rats and selects a group of 25 rats to be tested in a research study.The group of 25 rats is an example of a ____.​

Correct AnswerverifiedShow Answer

What is the value of ΣX + 1 for the following scores?​ Scores 1,0,2,4

Correct AnswerverifiedShow Answer

Using letter grades (A,B,C,D,and E) to classify student performance on an exam is an example of measurement on a(n) ____ scale of measurement.​

Correct AnswerverifiedShow Answer

Using the average score to describe a sample is an example of inferential statistics.​

Correct AnswerverifiedShow Answer

After measuring two individuals,a researcher can say that Tom's score is four points higher than Bill's.The measurements must come from a(n) ____ scale.​

Correct AnswerverifiedShow Answer

In a research study comparing attitude scores for males and females,participant gender is an example of what kind of variable?​

Correct AnswerverifiedShow Answer

To compute (ΣX)2,you first add the scores,then square the total.​

Correct AnswerverifiedShow Answer

For the following scores,Σ(X - 1)= 10.Scores: 1,3,7​

Correct AnswerverifiedShow Answer

In an introductory theater class,the professor records from the number of movies students watched the previous year.The teacher is measuring a discrete variable.​

Correct AnswerverifiedShow Answer

Recording the number of students who are absent each day at a high school would be an example of measuring a discrete variable.​

Correct AnswerverifiedShow Answer

A high school gym teacher records how much time each student requires to complete a one-mile run.This is an example of measuring a continuous variable.​

Correct AnswerverifiedShow Answer

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.For this study,what is the independent variable?

Correct Answer
verified

Which description provides an example of a continuous variable?

Correct Answer
verified

What is the final step to be performed when computing Σ(X - 2) 2?

Correct Answer
verified

Calculate each value requested for the following set of scores: $\begin{array} { r c } \mathrm { X } & \mathrm { Y } \\1 & 5 \\3 & 1 \\0 & - 2 \\2 & - 4\end{array}$ a. ΣX b. ΣY c. ΣXΣY d. ΣXY

Correct Answer
verified

A researcher interested in vocabulary development obtains a sample of three-year-old children to participate in a research study.The average score for the group of 20 is an example of a parameter.

Correct Answer
verified

A researcher is interested in the eating behavior of rats and selects a group of 25 rats to be tested in a research study.The group of 25 rats is an example of a ____.

Correct Answer
verified

What is the value of ΣX + 1 for the following scores? Scores 1,0,2,4

Correct Answer
verified

Using letter grades (A,B,C,D,and E) to classify student performance on an exam is an example of measurement on a(n) ____ scale of measurement.

Correct Answer
verified

Using the average score to describe a sample is an example of inferential statistics.

Correct Answer
verified

After measuring two individuals,a researcher can say that Tom's score is four points higher than Bill's.The measurements must come from a(n) ____ scale.

Correct Answer
verified

In a research study comparing attitude scores for males and females,participant gender is an example of what kind of variable?

Correct Answer
verified

To compute (ΣX)²,you first add the scores,then square the total.

Correct Answer
verified

For the following scores,Σ(X - 1)= 10.Scores: 1,3,7

Correct Answer
verified

In an introductory theater class,the professor records from the number of movies students watched the previous year.The teacher is measuring a discrete variable.

Correct Answer
verified

Recording the number of students who are absent each day at a high school would be an example of measuring a discrete variable.

Correct Answer
verified

A high school gym teacher records how much time each student requires to complete a one-mile run.This is an example of measuring a continuous variable.

Correct Answer
verified