Question 1

Variables measured on a nominal level are called qualitative variables.

Accepted Answer

A) True 
 B)False  True

Question 2

You are taking a survey where they ask you to rank questions as follows:
1=Strongly agree
2=agree
3=neutral
4=disagree
5=strong disagree.
This is what type of scale of measurement?

Accepted Answer

A) Nominal 
B) Interval 
C) Ordinal 
D) molecular 
E) All of these are correct 
A) Nominal 
B) Interval 
C) Ordinal 
D) molecular 
E) All of these are correct B

Question 3

Calculate the  
In which x is the number of words recalled 2,3,4.

Accepted Answer

A) 29 
B) 9 
C) 18 
D) 81 
A) 29 
B) 9 
C) 18 
D) 81 B

Question 4

A measure has as its referent only a particular scale.

Accepted Answer

A) True 
 B)False

Question 5

When researchers infer something about the general population from their sample they are using ____________________.

Accepted Answer

inferentia

Question 6

Dr.Johnson hypothesizes that NutraSweet reduces short-term memory.In order to test her hypothesis she gives 10 subjects a beverage containing NutraSweet (treatment group)and 10 subjects a beverage without NutraSweet (control group).She then measures the subject's ability to recall a list of numbers.In this study the independent variable is _______and the dependent variable is______.

Accepted Answer

A) whether the subjects received NutraSweet or placebo: recall for a list of numbers 
B) recall for a list of numbers: whether the subjects received NutraSweet 
C) the subjects ability to recall: the drink with NutraSweet 
D) Both b & c 
E) None of these 
A) whether the subjects received NutraSweet or placebo: recall for a list of numbers 
B) recall for a list of numbers: whether the subjects received NutraSweet 
C) the subjects ability to recall: the drink with NutraSweet 
D) Both b & c 
E) None of these

Question 7

An example of a continuous variable is:

Accepted Answer

A) intelligence 
B) reaction time 
C) both intelligence and reaction time 
D) neither intelligence nor reaction time 
A) intelligence 
B) reaction time 
C) both intelligence and reaction time 
D) neither intelligence nor reaction time

Question 8

ÓX = 12

Accepted Answer

A) True 
 B)False

Question 9

Nominal measurement involves using numbers merely as labels.

Accepted Answer

A) True 
 B)False

Question 10

ÓXY = 26

Accepted Answer

A) True 
 B)False

Question 11

The real limits of the number 2 are 1.50 and 2.50.

Accepted Answer

A) True 
 B)False

Question 12

Given the following data for X and Y variables,calculate ÓXY

Accepted Answer

A) 13 
B) 17 
C) 22 
D) 39 
A) 13 
B) 17 
C) 22 
D) 39

Question 13

A sample is an aggregate of all cases to which one wishes to generalize statements.

Accepted Answer

A) True 
 B)False

Question 14

The process of translating empirical relationships between objects into numerical relationships is referred to as _____.

Accepted Answer

A) probability 
B) randomization 
C) measurement 
D) inferential statistics 
A) probability 
B) randomization 
C) measurement 
D) inferential statistics

Question 15

The probability of getting heads on a penny following 1 flip of the coin is____________________.

Accepted Answer

The answer of The probability of getting heads on a...

Question 16

A statistic is based on a ____________________of the population.

Accepted Answer

The answer of A statistic is based on a ____________________of...

Question 17

Parameters are statistical indices based on data from:

Accepted Answer

A) a sample 
B) a random sample 
C) a population 
D) populations or samples 
A) a sample 
B) a random sample 
C) a population 
D) populations or samples

Question 18

One procedure for approximating representative samples is through:

Accepted Answer

A) random sampling 
B) nonrandom sampling 
C) systematic studies 
D) convenience sampling 
A) random sampling 
B) nonrandom sampling 
C) systematic studies 
D) convenience sampling

Question 19

Distinguish between a population and a sample.Give an example of each.

Accepted Answer

A population is the aggregate of all cas

Question 20

A researcher studies the relationship between the amount of time spent studying for an exam and the number of errors made.A sample of twenty students who have the same GPA are randomly assigned to one of four groups: 1,2,3,or 4 hours of study time.After studying the specified time,all students took an identical exam and the number of errors each student made was counted.
The dependent variable in the above study is:

Accepted Answer

A) number of errors made 
B) GPA of the students 
C) number of hours studied 
D) number of students in each group 
A) number of errors made 
B) GPA of the students 
C) number of hours studied 
D) number of students in each group

Variables measured on a nominal level are called qualitative variables.

You are taking a survey where they ask you to rank questions as follows: 1=Strongly agree 2=agree 3=neutral 4=disagree 5=strong disagree. This is what type of scale of measurement?

Calculate the In which x is the number of words recalled 2,3,4.

A measure has as its referent only a particular scale.

When researchers infer something about the general population from their sample they are using ____________________.

An example of a continuous variable is:

ÓX = 12

Nominal measurement involves using numbers merely as labels.

ÓXY = 26

The real limits of the number 2 are 1.50 and 2.50.

Given the following data for X and Y variables,calculate ÓXY

A sample is an aggregate of all cases to which one wishes to generalize statements.

The process of translating empirical relationships between objects into numerical relationships is referred to as _____.

The probability of getting heads on a penny following 1 flip of the coin is____________________.

A statistic is based on a ____________________of the population.

Parameters are statistical indices based on data from:

One procedure for approximating representative samples is through:

Distinguish between a population and a sample.Give an example of each.

Frequency and Probability Distributions

Measures of Central Tendency and Variability

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 1: Introduction and Mathematical Preliminaries

Variables measured on a nominal level are called qualitative variables.

You are taking a survey where they ask you to rank questions as follows: 1=Strongly agree 2=agree 3=neutral 4=disagree 5=strong disagree. This is what type of scale of measurement?

Calculate the In which x is the number of words recalled 2,3,4.

A measure has as its referent only a particular scale.

When researchers infer something about the general population from their sample they are using ____________________.

An example of a continuous variable is:

ÓX = 12

Nominal measurement involves using numbers merely as labels.

ÓXY = 26

The real limits of the number 2 are 1.50 and 2.50.

Given the following data for X and Y variables,calculate ÓXY

A sample is an aggregate of all cases to which one wishes to generalize statements.

The process of translating empirical relationships between objects into numerical relationships is referred to as _____.

The probability of getting heads on a penny following 1 flip of the coin is____________________.

A statistic is based on a ____________________of the population.

Parameters are statistical indices based on data from:

One procedure for approximating representative samples is through:

Distinguish between a population and a sample.Give an example of each.

Frequency and Probability Distributions

Measures of Central Tendency and Variability

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