Question 1

Calculate each value requested for the following set of scores.Scores: 3,4,2,6
a.ΣX - 2
b.Σ(X - 2)
c.Σ(X - 2)²

Accepted Answer

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

Question 2

What is the value of ΣX² for the scores 1,0,2,4?

Accepted Answer

A) 14 
B) 21 
C) 28 
D) 49 
A) 14 
B) 21 
C) 28 
D) 49

Question 3

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 4

Which of the following is 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 family 
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 family

Question 5

A correlational study is used to examine the relationship between two variables but cannot determine whether it is a cause-and-effect relationship.

Accepted Answer

A) True 
 B)False

Question 6

A researcher uses an anonymous survey to investigate the television-viewing habits of American adolescents.The goal of the research is to determine the average number of hours each day that American adolescents spend watching television.The researcher is trying to determine a number that is an example of a _____.

Accepted Answer

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

Question 7

Using the election results from a sample of n = 100 voters to predict the results for the entire state is an example of inferential statistics.

Accepted Answer

A) True 
 B)False

Question 8

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

Question 9

A researcher is curious about the average monthly cell phone bill for high school students in the state of Florida.If this average could be obtained,it would be an example of a ______.

Accepted Answer

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

Question 10

The final step in computing Σ(X + 1)² is to square the sum of the (X + 1)values.

Accepted Answer

A) True 
 B)False

Question 11

If a researcher measures two individuals on an ordinal scale,it is impossible to determine how much difference exists between the two people.

Accepted Answer

A) True 
 B)False

Question 12

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 13

A correlational study typically uses only one group of participants but measures two different variables (two scores)for each individual.

Accepted Answer

A) True 
 B)False

Question 14

What is the first step to be performed when computing Σ(X + 2)²?

Accepted Answer

A) Square each value 
B) Add 2 points to each score 
C) Sum the squared values 
D) Sum the (X + 2) values 
A) Square each value 
B) Add 2 points to each score 
C) Sum the squared values 
D) Sum the (X + 2) values

Question 15

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 16

For an experiment comparing two methods of teaching social skills training to autistic children,the independent variable is _______ and the dependent variable is _______.

Accepted Answer

A) teaching methods; the autistic children 
B) the autistic children; the social skills that are learned 
C) the social skills that are learned; the autistic children 
D) teaching methods; the social skills that are learned 
A) teaching methods; the autistic children 
B) the autistic children; the social skills that are learned 
C) the social skills that are learned; the autistic children 
D) teaching methods; the social skills that are learned

Question 17

To determine how much difference there is between two individuals,you must use either an interval or a ratio scale of measurement.

Accepted Answer

A) True 
 B)False

Question 18

Determining the class standing (1ˢᵗ,2ⁿᵈ,and so on)for the graduating seniors at a high school would involve 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 19

Students in an introductory art class are classified as art majors and non-art majors.What scale of measurement is being used to classify the students?

Accepted Answer

A) Nominal 
B) Ordinal 
C) Interval 
D) Ratio 
A) Nominal 
B) Ordinal 
C) Interval 
D) Ratio

Question 20

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

Calculate each value requested for the following set of scores.Scores: 3,4,2,6 a.ΣX - 2 b.Σ(X - 2) c.Σ(X - 2)²

What is the value of ΣX² for the scores 1,0,2,4?

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

Which of the following is an example of a continuous variable?

A correlational study is used to examine the relationship between two variables but cannot determine whether it is a cause-and-effect relationship.

Using the election results from a sample of n = 100 voters to predict the results for the entire state is an example of inferential statistics.

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 ______.

A researcher is curious about the average monthly cell phone bill for high school students in the state of Florida.If this average could be obtained,it would be an example of a ______.

The final step in computing Σ(X + 1)² is to square the sum of the (X + 1)values.

If a researcher measures two individuals on an ordinal scale,it is impossible to determine how much difference exists between the two people.

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 _.

A correlational study typically uses only one group of participants but measures two different variables (two scores)for each individual.

What is the first step to be performed when computing Σ(X + 2)²?

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.

For an experiment comparing two methods of teaching social skills training to autistic children,the independent variable is _ and the dependent variable is _.

To determine how much difference there is between two individuals,you must use either an interval or a ratio scale of measurement.

Determining the class standing (1ˢᵗ,2ⁿᵈ,and so on)for the graduating seniors at a high school would involve measurement on a(n)_____ scale of measurement.

Students in an introductory art class are classified as art majors and non-art majors.What scale of measurement is being used to classify the students?

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

Frequency Distributions.

Central Tendency.

Variability.

z-Scores: Location of Scores and Standardized Distributions.

Probability.

Probability and Samples: The Distribution of Sample Means.

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 Analysis of Variance

Correlation and Regression.

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

Filters

Exam 1: Introduction to Statistics.

Calculate each value requested for the following set of scores.Scores: 3,4,2,6 a.ΣX - 2 b.Σ(X - 2) c.Σ(X - 2)²

What is the value of ΣX² for the scores 1,0,2,4?

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

Which of the following is an example of a continuous variable?

A correlational study is used to examine the relationship between two variables but cannot determine whether it is a cause-and-effect relationship.

Using the election results from a sample of n = 100 voters to predict the results for the entire state is an example of inferential statistics.

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 ______.

A researcher is curious about the average monthly cell phone bill for high school students in the state of Florida.If this average could be obtained,it would be an example of a ______.

The final step in computing Σ(X + 1)² is to square the sum of the (X + 1)values.

If a researcher measures two individuals on an ordinal scale,it is impossible to determine how much difference exists between the two people.

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 _________.

A correlational study typically uses only one group of participants but measures two different variables (two scores)for each individual.

What is the first step to be performed when computing Σ(X + 2)²?

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.

For an experiment comparing two methods of teaching social skills training to autistic children,the independent variable is _______ and the dependent variable is _______.

To determine how much difference there is between two individuals,you must use either an interval or a ratio scale of measurement.

Determining the class standing (1ˢᵗ,2ⁿᵈ,and so on)for the graduating seniors at a high school would involve measurement on a(n)_____ scale of measurement.

Students in an introductory art class are classified as art majors and non-art majors.What scale of measurement is being used to classify the students?

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

Frequency Distributions.

Central Tendency.

Variability.

z-Scores: Location of Scores and Standardized Distributions.

Probability.

Probability and Samples: The Distribution of Sample Means.

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 Analysis of Variance

Correlation and Regression.

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

Filters

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 _.

For an experiment comparing two methods of teaching social skills training to autistic children,the independent variable is _ and the dependent variable is _.