Question 1

The sum of squares for a data set is 144 which has 80 subjects in it,what is the SD is____________________.

Accepted Answer

The answer of The sum of squares for a data...

Question 2

Most scores in negatively skewed distributions occur below the mean and only a relatively few extreme scores occur above it.

Accepted Answer

A) True 
 B)False

Question 3

If you subtract the mean from each score in a distribution,you would obtain a set of _____.

Accepted Answer

A) signed deviation scores 
B) standard individual deviation scores 
C) absolute deviation scores 
D) signed discrepancy scores 
A) signed deviation scores 
B) standard individual deviation scores 
C) absolute deviation scores 
D) signed discrepancy scores

Question 4

A ____________________is more peaked and has less variability.

Accepted Answer

Leptokurti

Question 5

If a distribution is less peaked than another,it is said to be more____;if it is more peaked than another,it is said to be more_____.

Accepted Answer

A) Skewed;variable 
B) Leptokuritc;variable 
C) platykurtic;leptokurtic 
D) leptokurtic;platykurtic 
A) Skewed;variable 
B) Leptokuritc;variable 
C) platykurtic;leptokurtic 
D) leptokurtic;platykurtic

Question 6

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

Accepted Answer

A.390/6=65 mean MD=2

Question 7

The variance is the average squared deviation from the mean.

Accepted Answer

A) True 
 B)False

Question 8

The range is the highest score minus the lowest score.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following sets of data is bimodal?

Accepted Answer

A) 75,85,95,105,105,105,115,125,135,135,135,145,155 
B) 53,62,71,80,80,80,94,99,100,132,132,145 
C) 2,2,2,3,3,3,3,4,5,6,7,7,7,8,8 
D) 20,30,30,30,30,40,50,60,70,90,100,100,100,112 
A) 75,85,95,105,105,105,115,125,135,135,135,145,155 
B) 53,62,71,80,80,80,94,99,100,132,132,145 
C) 2,2,2,3,3,3,3,4,5,6,7,7,7,8,8 
D) 20,30,30,30,30,40,50,60,70,90,100,100,100,112

Question 10

The measure of central tendency not affected by extreme scores is the____________________.

Accepted Answer

The answer of The measure of central tendency not affected...

Question 11

If the mean is greater than the median the distribution is negatively skewed.

Accepted Answer

A) True 
 B)False

Question 12

The major problem with the mode as a measure of central tendency is that:

Accepted Answer

A) there can be only one modal score 
B) there can be more than one modal score 
C) the mode is insensitive to variability 
D) the mode is insensitive to kurtosis 
A) there can be only one modal score 
B) there can be more than one modal score 
C) the mode is insensitive to variability 
D) the mode is insensitive to kurtosis

Question 13

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

Accepted Answer

A) 96 
B) 112.5 
C) 113.5 
D) 115 
A) 96 
B) 112.5 
C) 113.5 
D) 115

Question 14

Define skewness and describe what is meant by positively and negatively skewed distributions.

Accepted Answer

Skewness refers to the tendency for scor

The sum of squares for a data set is 144 which has 80 subjects in it,what is the SD is____________________.

Most scores in negatively skewed distributions occur below the mean and only a relatively few extreme scores occur above it.

If you subtract the mean from each score in a distribution,you would obtain a set of _____.

A ____________________is more peaked and has less variability.

If a distribution is less peaked than another,it is said to be more;if it is more peaked than another,it is said to be more_.

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

The variance is the average squared deviation from the mean.

The range is the highest score minus the lowest score.

Which of the following sets of data is bimodal?

The measure of central tendency not affected by extreme scores is the____________________.

If the mean is greater than the median the distribution is negatively skewed.

The major problem with the mode as a measure of central tendency is that:

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

Define skewness and describe what is meant by positively and negatively skewed distributions.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

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

The sum of squares for a data set is 144 which has 80 subjects in it,what is the SD is____________________.

Most scores in negatively skewed distributions occur below the mean and only a relatively few extreme scores occur above it.

If you subtract the mean from each score in a distribution,you would obtain a set of _____.

A ____________________is more peaked and has less variability.

If a distribution is less peaked than another,it is said to be more____;if it is more peaked than another,it is said to be more_____.

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

The variance is the average squared deviation from the mean.

The range is the highest score minus the lowest score.

Which of the following sets of data is bimodal?

The measure of central tendency not affected by extreme scores is the____________________.

If the mean is greater than the median the distribution is negatively skewed.

The major problem with the mode as a measure of central tendency is that:

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

Define skewness and describe what is meant by positively and negatively skewed distributions.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

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

If a distribution is less peaked than another,it is said to be more;if it is more peaked than another,it is said to be more_.