Question 1

When the results of an experiment can be applied to real-world conditions,that experiment is said to have:

Accepted Answer

A) Ecological validity 
B) Factorial validity 
C) Content validity 
D) Criterion validity 
A) Ecological validity 
B) Factorial validity 
C) Content validity 
D) Criterion validity A

Question 2

Complete the following sentence: A large standard deviation (relative to the value of the mean itself)

Accepted Answer

A) indicates that the data points are close to the mean. 
B) indicates that the mean is a good fit of the data. 
C) indicates that you should analyse your data with a parametric test. 
D) indicates that the data points are distant from the mean (i.e.the mean is a poor fit of the data). 
A) indicates that the data points are close to the mean. 
B) indicates that the mean is a good fit of the data. 
C) indicates that you should analyse your data with a parametric test. 
D) indicates that the data points are distant from the mean (i.e.the mean is a poor fit of the data). D

Question 3

The standard deviation is the square root of the:

Accepted Answer

A) coefficient of determination 
B) sum of squares 
C) range 
D) variance 
A) coefficient of determination 
B) sum of squares 
C) range 
D) variance D

Question 4

A demand characteristic is:

Accepted Answer

A) A personality trait that makes a participant likely to find an experiment too demanding. 
B) When a person responds in an experiment in a way that is consistent with their beliefs about how the experimenter would like them to behave. 
C) When the experimenter's behaviour affects the results of an experiment. 
D) A personality trait that affects the results of an experiment in an undesirable way. 
A) A personality trait that makes a participant likely to find an experiment too demanding. 
B) When a person responds in an experiment in a way that is consistent with their beliefs about how the experimenter would like them to behave. 
C) When the experimenter's behaviour affects the results of an experiment. 
D) A personality trait that affects the results of an experiment in an undesirable way.

Question 5

A frequency distribution in which there are too few scores at the extremes of the distribution said to be:

Accepted Answer

A) Leptokurtic 
B) Positively skewed 
C) Platykurtic 
D) Negatively skewed 
A) Leptokurtic 
B) Positively skewed 
C) Platykurtic 
D) Negatively skewed

Question 6

Below is a histogram of ratings of Britney Spears's CD,Britney.What can we say about the data from this histogram?

Accepted Answer

A) The data are leptokurtic. 
B) The modal score is 5. 
C) The data are normally distributed. 
D) The median rating was 2. 
A) The data are leptokurtic. 
B) The modal score is 5. 
C) The data are normally distributed. 
D) The median rating was 2.

Question 7

A variable manipulated by a researcher is known as:

Accepted Answer

A) A discrete variable 
B) An independent variable 
C) A dependent variable 
D) A confounding variable 
A) A discrete variable 
B) An independent variable 
C) A dependent variable 
D) A confounding variable

Question 8

A frequency distribution in which low scores are most frequent (i.e.bars on the graph are highest on the left hand side)is said to be:

Accepted Answer

A) Positively skewed 
B) Leptokurtic 
C) Platykurtic 
D) Negatively skewed 
A) Positively skewed 
B) Leptokurtic 
C) Platykurtic 
D) Negatively skewed

Question 9

A frequency distribution in which high scores are most frequent (i.e.bars on the graph are highest on the right hand side)is said to be:

Accepted Answer

A) Leptokurtic 
B) Platykurtic 
C) Negatively skewed 
D) Positively skewed 
A) Leptokurtic 
B) Platykurtic 
C) Negatively skewed 
D) Positively skewed

Question 10

Which of the following best describes a confounding variable?

Accepted Answer

A) A variable that affects the outcome being measured as well as,or instead of,the independent variable. 
B) A variable that is manipulated by the experimenter. 
C) A variable that has been measured using an unreliable scale. 
D) A variable that is made up only of categories. 
A) A variable that affects the outcome being measured as well as,or instead of,the independent variable. 
B) A variable that is manipulated by the experimenter. 
C) A variable that has been measured using an unreliable scale. 
D) A variable that is made up only of categories.

Question 11

A predictor variable is another name for:

Accepted Answer

A) An independent variable 
B) A dependent variable 
C) A confounding variable 
D) A discrete variable 
A) An independent variable 
B) A dependent variable 
C) A confounding variable 
D) A discrete variable

Question 12

If a test is valid,what does this mean?

Accepted Answer

A) The test will give consistent results. 
B) The test has internal consistency. 
C) The test measures a useful construct or variable. 
D) The test measures what it claims to measure. 
A) The test will give consistent results. 
B) The test has internal consistency. 
C) The test measures a useful construct or variable. 
D) The test measures what it claims to measure.

Question 13

Complete the following sentence: A small standard deviation (relative to the value of the mean itself)

Accepted Answer

A) indicates that the mean is a poor fit of the data. 
B) indicates that you should analyse your data with a non-parametric test. 
C) indicates that data points are close to the mean (i.e.the mean is a good fit of the data). 
D) indicates that the data points are distant from the mean. 
A) indicates that the mean is a poor fit of the data. 
B) indicates that you should analyse your data with a non-parametric test. 
C) indicates that data points are close to the mean (i.e.the mean is a good fit of the data). 
D) indicates that the data points are distant from the mean.

Question 14

The discrepancy between the numbers used to represent something that we are trying to measure and the actual value of what we are measuring is called:

Accepted Answer

A) Reliability 
B) The 'fit' of the model 
C) Variance 
D) Measurement error 
A) Reliability 
B) The 'fit' of the model 
C) Variance 
D) Measurement error

Question 15

Variation due to variables that have not been measured is known as:

Accepted Answer

A) Homogenous variance 
B) Systematic variation 
C) Residual variance 
D) Unsystematic variation 
A) Homogenous variance 
B) Systematic variation 
C) Residual variance 
D) Unsystematic variation

Question 16

If the scores on a test have a mean of 26 and a standard deviation of 4,what is the z-score for a score of 18?

Accepted Answer

A) 2 
B) -1.41 
C) -2 
D) 11 
A) 2 
B) -1.41 
C) -2 
D) 11

Question 17

A café owner wanted to compare how much revenue he gained from lattes across different months of the year.What type of variable is 'month'?

Accepted Answer

A) continuous 
B) categorical 
C) dependent 
D) interval 
A) continuous 
B) categorical 
C) dependent 
D) interval

Question 18

What is the standard deviation?

Accepted Answer

A) A measure of the dispersion or spread of data around the mean. 
B) A measure of the relationship between two variables. 
C) The variance squared. 
D) The degree to which scores cluster at the ends of the distribution. 
A) A measure of the dispersion or spread of data around the mean. 
B) A measure of the relationship between two variables. 
C) The variance squared. 
D) The degree to which scores cluster at the ends of the distribution.

Question 19

When questionnaire scores predict or correspond with external measures of the same construct that the questionnaire measures it is said to have:

Accepted Answer

A) Ecological validity 
B) Content validity 
C) Criterion validity 
D) Factorial validity 
A) Ecological validity 
B) Content validity 
C) Criterion validity 
D) Factorial validity

Question 20

What kind of variable is IQ,measured by a standard IQ test?

Accepted Answer

A) Nominal 
B) Continuous 
C) Categorical 
D) Discrete 
A) Nominal 
B) Continuous 
C) Categorical 
D) Discrete

Exam 1: Why Is My Evil Lecturer Forcing Me to Learn Statistics

When the results of an experiment can be applied to real-world conditions,that experiment is said to have:

Complete the following sentence: A large standard deviation (relative to the value of the mean itself)

The standard deviation is the square root of the:

A demand characteristic is:

A frequency distribution in which there are too few scores at the extremes of the distribution said to be:

Below is a histogram of ratings of Britney Spears's CD,Britney.What can we say about the data from this histogram?

A variable manipulated by a researcher is known as:

A frequency distribution in which low scores are most frequent (i.e.bars on the graph are highest on the left hand side)is said to be:

A frequency distribution in which high scores are most frequent (i.e.bars on the graph are highest on the right hand side)is said to be:

Which of the following best describes a confounding variable?

A predictor variable is another name for:

If a test is valid,what does this mean?

Complete the following sentence: A small standard deviation (relative to the value of the mean itself)

The discrepancy between the numbers used to represent something that we are trying to measure and the actual value of what we are measuring is called:

Variation due to variables that have not been measured is known as:

If the scores on a test have a mean of 26 and a standard deviation of 4,what is the z-score for a score of 18?

A café owner wanted to compare how much revenue he gained from lattes across different months of the year.What type of variable is 'month'?

What is the standard deviation?

When questionnaire scores predict or correspond with external measures of the same construct that the questionnaire measures it is said to have:

What kind of variable is IQ,measured by a standard IQ test?

The Spine of Statistics

The Phoenix of Statistics

The Ibm Spss Statistics Environment

Exploring Data With Graphs

The Beast of Bias

Non-Parametric Models

Correlation

Regression

Comparing Two Means

Moderation,mediation and More Regression

Glm 1: Comparing Several Independent Means

Glm 2: Comparing Means Adjusted for Other Predictors Analysis of Covariance

Glm 3: Factorial Designs

Glm 4: Repeated-Measures Designs

Glm 5: Mixed Designs

Multivariate Analysis of Variance Manova

Exploratory Factor Analysis

Categorical Outcomes: Chi-Square and Loglinear Analysis

Categorical Outcomes: Logistic Regression

Multilevel Linear Models

Filters