Exam 2: Statistics and the Research Process

A researcher investigates whether there is a relationship between hours of sleep and memory for photographs by having 40 people sleep in the laboratory and waking 20 randomly selected participants after 4 hours of sleep and the others after 8 hours of sleep.After they are awakened,each participant is asked to study 12 photographs and then recall as many details from the photographs as possible.What is the independent variable in this study?

(Multiple Choice)

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Question 21

Which of the graphs below shows the strongest relationship between hand eye coordination and sports ability?

(Multiple Choice)

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Question 22

Which of the following statements indicates the existence of a relationship?

(Multiple Choice)

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Question 23

We study laws of nature by studying the relationship between the __________ that measure the behaviors or events.

(Multiple Choice)

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Question 24

In statistics a population is

(Multiple Choice)

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Question 25

A relationship can be described using the general format "scores on the Y variable change as _____ changes in the X variable."

(Multiple Choice)

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Question 26

Which measurement scale indicates how one individual is qualitatively different from another?

(Multiple Choice)

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Question 27

Technically,behavior-influencing variables that an experimenter cannot change by doing something to participants are called a(n)

(Multiple Choice)

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Question 28

If a researcher actively changes or manipulates one variable and then measures the scores on another variable,the researcher is conducting

(Multiple Choice)

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Question 29

A number that describes a characteristic of a sample of scores is called a

(Multiple Choice)

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Question 30

What do the design of the study and the scale of measurement have in common?

(Multiple Choice)

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Question 31

A researcher investigates whether there is a relationship between gender and color discrimination by randomly selecting 50 males and 50 females and asking them to discriminate between colors.The variable measuring accuracy in color discrimination is a

(Multiple Choice)

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Question 32

"My roommate's IQ is 95." The scale of measurement involved in this statement is

(Multiple Choice)

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Question 33

"My son just finished 3^rd in the local marathon." The scale of measurement involved in this statement is

(Multiple Choice)

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Question 34

Suppose you are interested in how participants perform under different temperature conditions.You randomly select 30 participants and randomly assign them to work in one of three rooms.The rooms differ only with respect to temperature.You instruct all participants to solve the same jigsaw puzzle,and then you measure how long it takes each one to finish.In this research,temperature serves as the

(Multiple Choice)

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Question 35

Quantitative variables measure _ and qualitative variables measure _.

(Multiple Choice)

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Question 36

If I want to summarize the characteristics of my statistics class to my friend,I should use

(Multiple Choice)

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Question 37

A statistics class has 50% females and 50% males.A researcher randomly selects a sample that has 80% males and 20% females.Why should the researcher be cautious of making inferences about the entire class based on the sample?

(Multiple Choice)

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Question 38

In order to make statements about the population from information obtained from a sample,we must use

(Multiple Choice)

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Question 39

As a method for creating a sample,random sampling means that

(Multiple Choice)

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Question 40

Showing 21 - 40 of 75

Which of the graphs below shows the strongest relationship between hand eye coordination and sports ability?

Which of the following statements indicates the existence of a relationship?

We study laws of nature by studying the relationship between the __________ that measure the behaviors or events.

In statistics a population is

A relationship can be described using the general format "scores on the Y variable change as _____ changes in the X variable."

Which measurement scale indicates how one individual is qualitatively different from another?

Technically,behavior-influencing variables that an experimenter cannot change by doing something to participants are called a(n)

If a researcher actively changes or manipulates one variable and then measures the scores on another variable,the researcher is conducting

A number that describes a characteristic of a sample of scores is called a

What do the design of the study and the scale of measurement have in common?

A researcher investigates whether there is a relationship between gender and color discrimination by randomly selecting 50 males and 50 females and asking them to discriminate between colors.The variable measuring accuracy in color discrimination is a

"My roommate's IQ is 95." The scale of measurement involved in this statement is

"My son just finished 3^rd in the local marathon." The scale of measurement involved in this statement is

Quantitative variables measure _ and qualitative variables measure _.

If I want to summarize the characteristics of my statistics class to my friend,I should use

A statistics class has 50% females and 50% males.A researcher randomly selects a sample that has 80% males and 20% females.Why should the researcher be cautious of making inferences about the entire class based on the sample?

In order to make statements about the population from information obtained from a sample,we must use

As a method for creating a sample,random sampling means that

Introduction to Statistics

Frequency Distributions and Percentiles

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

Performing the One-Sample T-Test and Testing Correlation Coefficients

The Two-Sample T-Test

The One-Way Analysis of Variance

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters

Exam 2: Statistics and the Research Process

Which of the graphs below shows the strongest relationship between hand eye coordination and sports ability?

Which of the following statements indicates the existence of a relationship?

We study laws of nature by studying the relationship between the __________ that measure the behaviors or events.

In statistics a population is

A relationship can be described using the general format "scores on the Y variable change as _____ changes in the X variable."

Which measurement scale indicates how one individual is qualitatively different from another?

Technically,behavior-influencing variables that an experimenter cannot change by doing something to participants are called a(n)

If a researcher actively changes or manipulates one variable and then measures the scores on another variable,the researcher is conducting

A number that describes a characteristic of a sample of scores is called a

What do the design of the study and the scale of measurement have in common?

A researcher investigates whether there is a relationship between gender and color discrimination by randomly selecting 50 males and 50 females and asking them to discriminate between colors.The variable measuring accuracy in color discrimination is a

"My roommate's IQ is 95." The scale of measurement involved in this statement is

"My son just finished 3rd in the local marathon." The scale of measurement involved in this statement is

Quantitative variables measure _____ and qualitative variables measure _____.

If I want to summarize the characteristics of my statistics class to my friend,I should use

A statistics class has 50% females and 50% males.A researcher randomly selects a sample that has 80% males and 20% females.Why should the researcher be cautious of making inferences about the entire class based on the sample?

In order to make statements about the population from information obtained from a sample,we must use

As a method for creating a sample,random sampling means that

Introduction to Statistics

Frequency Distributions and Percentiles

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

Performing the One-Sample T-Test and Testing Correlation Coefficients

The Two-Sample T-Test

The One-Way Analysis of Variance

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters

"My son just finished 3^rd in the local marathon." The scale of measurement involved in this statement is

Quantitative variables measure _ and qualitative variables measure _.