Exam 3: Measures of Central Tendency and Variability

One problem with the sum of squares as an index of variability is that its size depends not only on the amount of _ among the scores,but also on the _ of scores.

(Multiple Choice)

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Question 21

The average person can hold 7+2 digits or bits of information in their short term memory with an SD= 2.What is the variance?

(Multiple Choice)

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Question 22

If you were measuring the income level of people living in Los Angeles you would use the median because____________________.

(Short Answer)

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Question 23

Suppose a researcher was interested in determining the effect of an experimental drug on the lifespan of laboratory rats.Shown below is a summary of the lifespans,in months,for laboratory animals administered the drug.Compute the median number of months the animals survived.

(Multiple Choice)

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Question 24

Dr.Qui found his test scores to be as follows 60,92,75,79,75,and 90.What is the range of the test scores?

(Multiple Choice)

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Question 25

What measure of central tendency is used with a nominal scale?

(Multiple Choice)

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Question 26

Eight psychology students took a well-known I.Q.test and achieved the following scores: 96,98,108,110,115,120,121,142.The mean I.Q.is _____.

(Multiple Choice)

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Question 27

The mean relative to the median determines if the distribution is____________________.

(Short Answer)

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Question 28

The mean is computed by summing all of the scores and then dividing the sum by the squared deviation scores.

(True/False)

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Question 29

As a measure of central tendency,the median _____ the absolute difference between it and the scores in the distribution.

(Multiple Choice)

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Question 30

When comparing two different distributions,which of the following is not possible?

(Multiple Choice)

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Question 31

Considering the distribution -2,-4,-6,-8,-10,the SS is _____.

(Multiple Choice)

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Question 32

The shape of a distribution is influenced by both the variance with in the data set and the mean median and mode.

(True/False)

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Question 33

The _____tells us the average variability in a cluster of scores.

(Multiple Choice)

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Question 34

Which of the following statements is true of a median score?

(Multiple Choice)

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Question 35

The mean of a _skewed distribution will always be _than the median.

(Multiple Choice)

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Question 36

When there is an even number of scores,the median is the _____.

(Multiple Choice)

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Question 37

When there are duplications of the middle score(s),the median is simply the middle score.

(True/False)

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Question 38

What statement below is TRUE in regards to a normal distribution?

(Multiple Choice)

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Question 39

Consider the 2 sets of data below and calculate the mean,median,mode and range for each. A.20 19 21 20 10 300 B.53 54 55 56 57 59 60

(Short Answer)

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Question 40

Showing 21 - 40 of 154

One problem with the sum of squares as an index of variability is that its size depends not only on the amount of _ among the scores,but also on the _ of scores.

The average person can hold 7+2 digits or bits of information in their short term memory with an SD= 2.What is the variance?

If you were measuring the income level of people living in Los Angeles you would use the median because____________________.

Suppose a researcher was interested in determining the effect of an experimental drug on the lifespan of laboratory rats.Shown below is a summary of the lifespans,in months,for laboratory animals administered the drug.Compute the median number of months the animals survived.

Dr.Qui found his test scores to be as follows 60,92,75,79,75,and 90.What is the range of the test scores?

What measure of central tendency is used with a nominal scale?

Eight psychology students took a well-known I.Q.test and achieved the following scores: 96,98,108,110,115,120,121,142.The mean I.Q.is _____.

The mean relative to the median determines if the distribution is____________________.

The mean is computed by summing all of the scores and then dividing the sum by the squared deviation scores.

As a measure of central tendency,the median _____ the absolute difference between it and the scores in the distribution.

When comparing two different distributions,which of the following is not possible?

Considering the distribution -2,-4,-6,-8,-10,the SS is _____.

The shape of a distribution is influenced by both the variance with in the data set and the mean median and mode.

The _____tells us the average variability in a cluster of scores.

Which of the following statements is true of a median score?

The mean of a _skewed distribution will always be _than the median.

When there is an even number of scores,the median is the _____.

When there are duplications of the middle score(s),the median is simply the middle score.

What statement below is TRUE in regards to a normal distribution?

Consider the 2 sets of data below and calculate the mean,median,mode and range for each. A.20 19 21 20 10 300 B.53 54 55 56 57 59 60

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 3: Measures of Central Tendency and Variability

One problem with the sum of squares as an index of variability is that its size depends not only on the amount of _____ among the scores,but also on the _____ of scores.

The average person can hold 7+2 digits or bits of information in their short term memory with an SD= 2.What is the variance?

If you were measuring the income level of people living in Los Angeles you would use the median because____________________.

Suppose a researcher was interested in determining the effect of an experimental drug on the lifespan of laboratory rats.Shown below is a summary of the lifespans,in months,for laboratory animals administered the drug.Compute the median number of months the animals survived.

Dr.Qui found his test scores to be as follows 60,92,75,79,75,and 90.What is the range of the test scores?

What measure of central tendency is used with a nominal scale?

Eight psychology students took a well-known I.Q.test and achieved the following scores: 96,98,108,110,115,120,121,142.The mean I.Q.is _____.

The mean relative to the median determines if the distribution is____________________.

The mean is computed by summing all of the scores and then dividing the sum by the squared deviation scores.

As a measure of central tendency,the median _____ the absolute difference between it and the scores in the distribution.

When comparing two different distributions,which of the following is not possible?

Considering the distribution -2,-4,-6,-8,-10,the SS is _____.

The shape of a distribution is influenced by both the variance with in the data set and the mean median and mode.

The _____tells us the average variability in a cluster of scores.

Which of the following statements is true of a median score?

The mean of a _____skewed distribution will always be _____than the median.

When there is an even number of scores,the median is the _____.

When there are duplications of the middle score(s),the median is simply the middle score.

What statement below is TRUE in regards to a normal distribution?

Consider the 2 sets of data below and calculate the mean,median,mode and range for each. A.20 19 21 20 10 300 B.53 54 55 56 57 59 60

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

One problem with the sum of squares as an index of variability is that its size depends not only on the amount of _ among the scores,but also on the _ of scores.

The mean of a _skewed distribution will always be _than the median.