Question 1

What is the value of ΣX + 1 for the scores 1,6,3?

Accepted Answer

A) 10 
B) 11 
C) 13 
D) 16 
A) 10 
B) 11 
C) 13 
D) 16

Question 2

An experimental research study typically involves measuring two scores for each individual in one group of participants.

Accepted Answer

A) True 
 B)False

Question 3

For 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) A dependent variable 
C) A quasi-independent variable 
D) A quasi-dependent variable 
A) An independent variable 
B) A dependent variable 
C) A quasi-independent variable 
D) A quasi-dependent variable

Question 4

A researcher interested in vocabulary development obtains a sample of 3-year-old children to participate in a research study.The average score for the group of children is an example of a parameter.

Accepted Answer

A) True 
 B)False

Question 5

For the following scores,ΣX2 = 49.

Accepted Answer

A) True 
 B)False

Question 6

A recent report concluded that children with siblings have better social skills than children who grow up as an only child.This is an example of an experimental study.

Accepted Answer

A) True 
 B)False

Question 7

A recent study found a correlation between gum disease and heart disease.This result indicates that gum disease causes people to develop heart disease.

Accepted Answer

A) True 
 B)False

Question 8

In an experimental study,

Accepted Answer

A) 1 variable is measured and 2 groups are compared. 
B) 2 variables are measured and 2 groups are compared. 
C) 1 variable is measured and there is only 1 group of participants. 
D) 2 variables are measured and there is only 1 group of participants. 
A) 1 variable is measured and 2 groups are compared. 
B) 2 variables are measured and 2 groups are compared. 
C) 1 variable is measured and there is only 1 group of participants. 
D) 2 variables are measured and there is only 1 group of participants.

Question 9

For the following scores,Σ(X + 1)2 = 81.

Accepted Answer

A) True 
 B)False

Question 10

If a researcher measures two individuals on a nominal scale,it is impossible to determine which individual has the larger score.

Accepted Answer

A) True 
 B)False

Question 11

A recent report concluded that college graduates have higher life-satisfaction scores than individuals who do not receive college degrees.For this study,graduating versus not graduating is an example of a quasi-independent variable.

Accepted Answer

A) True 
 B)False

Question 12

A researcher conducts an experiment to determine whether moderate doses of St.Johns Wort have any effect of memory for college students.For this study,what is the independent variable?

Accepted Answer

A) The amount of St.Johns Wort given to each participant 
B) The memory score for each participant 
C) The group of college students 
D) Cannot answer without more information 
A) The amount of St.Johns Wort given to each participant 
B) The memory score for each participant 
C) The group of college students 
D) Cannot answer without more information

Question 13

A researcher uses an anonymous survey to investigate the television-viewing habits of American adolescents.The entire group of American adolescents is an example of a _________.

Accepted Answer

A) sample 
B) statistic 
C) population 
D) parameter 
A) sample 
B) statistic 
C) population 
D) parameter

Question 14

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 15

For the following scores,Σ(X - 1)= 10.

Accepted Answer

A) True 
 B)False

Question 16

Although a research study is typically conducted with a relatively small group of participants known as a _________,most researchers hope to generalize their results to a much larger group known as a _________.

Accepted Answer

A) sample; population 
B) statistic; sample 
C) population; sample 
D) parameter; population 
A) sample; population 
B) statistic; sample 
C) population; sample 
D) parameter; population

Question 17

What kind of variable requires the use of real limits?

Accepted Answer

A) Independent 
B) Dependent 
C) Discrete 
D) Continuous 
A) Independent 
B) Dependent 
C) Discrete 
D) Continuous

Question 18

What is the value of (ΣX)2 for the scores 1,5,2?

Accepted Answer

A) 10 
B) 16 
C) 30 
D) 64 
A) 10 
B) 16 
C) 30 
D) 64

Question 19

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

Question 20

To compute ΣX2,you first add the scores,then square the total.

Accepted Answer

A) True 
 B)False

What is the value of ΣX + 1 for the scores 1,6,3?

An experimental research study typically involves measuring two scores for each individual in one group of participants.

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

A researcher interested in vocabulary development obtains a sample of 3-year-old children to participate in a research study.The average score for the group of children is an example of a parameter.

For the following scores,ΣX² = 49.

A recent report concluded that children with siblings have better social skills than children who grow up as an only child.This is an example of an experimental study.

A recent study found a correlation between gum disease and heart disease.This result indicates that gum disease causes people to develop heart disease.

In an experimental study,

For the following scores,Σ(X + 1)² = 81.

If a researcher measures two individuals on a nominal scale,it is impossible to determine which individual has the larger score.

A recent report concluded that college graduates have higher life-satisfaction scores than individuals who do not receive college degrees.For this study,graduating versus not graduating is an example of a quasi-independent variable.

A researcher conducts an experiment to determine whether moderate doses of St.Johns Wort have any effect of memory for college students.For this study,what is the independent variable?

A researcher uses an anonymous survey to investigate the television-viewing habits of American adolescents.The entire group of American adolescents is an example of a _________.

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.

For the following scores,Σ(X - 1)= 10.

Although a research study is typically conducted with a relatively small group of participants known as a _,most researchers hope to generalize their results to a much larger group known as a _.

What kind of variable requires the use of real limits?

What is the value of (ΣX)² for the scores 1,5,2?

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.

To compute ΣX²,you first add the scores,then square the total.

Frequency Distributions

Measures of Central Tendency

Measures of Variability

Z-Scores

Probability

Probability and Samples:

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures and Two-Factor Anova

Correlation and Regression

Chi-Square Tests

Filters

Exam 1: Introduction to Statistics

What is the value of ΣX + 1 for the scores 1,6,3?

An experimental research study typically involves measuring two scores for each individual in one group of participants.

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

A researcher interested in vocabulary development obtains a sample of 3-year-old children to participate in a research study.The average score for the group of children is an example of a parameter.

For the following scores,ΣX2 = 49.

A recent report concluded that children with siblings have better social skills than children who grow up as an only child.This is an example of an experimental study.

A recent study found a correlation between gum disease and heart disease.This result indicates that gum disease causes people to develop heart disease.

In an experimental study,

For the following scores,Σ(X + 1)2 = 81.

If a researcher measures two individuals on a nominal scale,it is impossible to determine which individual has the larger score.

A recent report concluded that college graduates have higher life-satisfaction scores than individuals who do not receive college degrees.For this study,graduating versus not graduating is an example of a quasi-independent variable.

A researcher conducts an experiment to determine whether moderate doses of St.Johns Wort have any effect of memory for college students.For this study,what is the independent variable?

A researcher uses an anonymous survey to investigate the television-viewing habits of American adolescents.The entire group of American adolescents is an example of a _________.

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.

For the following scores,Σ(X - 1)= 10.

Although a research study is typically conducted with a relatively small group of participants known as a _________,most researchers hope to generalize their results to a much larger group known as a _________.

What kind of variable requires the use of real limits?

What is the value of (ΣX)2 for the scores 1,5,2?

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.

To compute ΣX2,you first add the scores,then square the total.

Frequency Distributions

Measures of Central Tendency

Measures of Variability

Z-Scores

Probability

Probability and Samples:

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures and Two-Factor Anova

Correlation and Regression

Chi-Square Tests

Filters

For the following scores,ΣX² = 49.

For the following scores,Σ(X + 1)² = 81.

Although a research study is typically conducted with a relatively small group of participants known as a _,most researchers hope to generalize their results to a much larger group known as a _.

What is the value of (ΣX)² for the scores 1,5,2?

To compute ΣX²,you first add the scores,then square the total.