Question 1

In his study Joey receives a kurtosis of .87. Which of the following is an accurate statement based on Joey's kurtosis?

Accepted Answer

A) the sample is left (negatively) skewed 
B) the sample is right (positively) skewed 
C) the sample has a tall peak 
D) the sample has a flat peak 
A) the sample is left (negatively) skewed 
B) the sample is right (positively) skewed 
C) the sample has a tall peak 
D) the sample has a flat peak

Question 2

To create a _______________, simply record the number of occurrences for each value in the dataset.

Accepted Answer

A) frequency distribution 
B) inferential statistic 
C) measure of central tendency 
D) sample statistic 
A) frequency distribution 
B) inferential statistic 
C) measure of central tendency 
D) sample statistic

Question 3

Distinguish between descriptive and inferential statistics.

Accepted Answer

Descriptive statistics and inferential s

Question 4

What is the kurtosis for the following set of numbers?
100 87 36 35 29

Accepted Answer

A) -2.79 
B) 33.38 
C) 57.40 
D) .66 
A) -2.79 
B) 33.38 
C) 57.40 
D) .66

Question 5

Explain the purpose of skewness and kurtosis.

Accepted Answer

Skewness and kurtosis are statistical me

Question 6

What variables are usually analyzed using descriptive statistics? In what section of a research study might audiences find descriptive statics reported?

Accepted Answer

Descriptive statistics are typically use

Question 7

Inferential statistical tests allow researchers to make inferences about some unknown aspect of a sample from a population.

Accepted Answer

A) True 
 B)False

Question 8

Match each of the following terms with the correct statement.
-Standard Deviation

Accepted Answer

A) Square root of the variance. 
B) Statistics that are used to make predictions. 
C) ΣX / N 
D) Measures how wide or spread out a distribution is or the average distance of the scores for an interval or ration scale from the mean in squared units. 
E) Any record or observation. 
A) Square root of the variance. 
B) Statistics that are used to make predictions. 
C) ΣX / N 
D) Measures how wide or spread out a distribution is or the average distance of the scores for an interval or ration scale from the mean in squared units. 
E) Any record or observation.

Question 9

Mode is defined as the middle value in a list of data.

Accepted Answer

A) True 
 B)False

Question 10

Match each of the following terms with the correct statement.
-Population Mean

Accepted Answer

A) Square root of the variance. 
B) Statistics that are used to make predictions. 
C) ΣX / N 
D) Measures how wide or spread out a distribution is or the average distance of the scores for an interval or ration scale from the mean in squared units. 
E) Any record or observation. 
A) Square root of the variance. 
B) Statistics that are used to make predictions. 
C) ΣX / N 
D) Measures how wide or spread out a distribution is or the average distance of the scores for an interval or ration scale from the mean in squared units. 
E) Any record or observation.

Question 11

When data are analyzed in order to make inferences from a smaller group of data to a larger group of data, the larger group of data is referred to as the

Accepted Answer

A) sample 
B) pool of participants 
C) population 
D) data pool 
A) sample 
B) pool of participants 
C) population 
D) data pool

Question 12

In Janell's study, she finds the sum of squares for her variable is 20. She also has five participants in her study. What is her variance (s2 = SS/ (N - 1.)?

Accepted Answer

A) 20 
B) 5 
C) 4 
D) 1 
A) 20 
B) 5 
C) 4 
D) 1

Question 13

What are measures of variability?

Accepted Answer

Measures of variability, also known as m

Question 14

If a data set has two modes, it is said to be bimodal.

Accepted Answer

A) True 
 B)False

Question 15

What is the median for the following set of numbers?
100 87 36 35 29

Accepted Answer

A) 57.40 
B) 33.38 
C) -2.79 
D) 36 
A) 57.40 
B) 33.38 
C) -2.79 
D) 36

Question 16

Kurtosis lets a researcher know whether or not her or his data are flat or peaked.

Accepted Answer

A) True 
 B)False

Question 17

A sample is used to best represent a portion of the population.

Accepted Answer

A) True 
 B)False

In his study Joey receives a kurtosis of .87. Which of the following is an accurate statement based on Joey's kurtosis?

To create a _______________, simply record the number of occurrences for each value in the dataset.

Distinguish between descriptive and inferential statistics.

What is the kurtosis for the following set of numbers? 100 87 36 35 29

Explain the purpose of skewness and kurtosis.

What variables are usually analyzed using descriptive statistics? In what section of a research study might audiences find descriptive statics reported?

Inferential statistical tests allow researchers to make inferences about some unknown aspect of a sample from a population.

Match each of the following terms with the correct statement. -Standard Deviation

Mode is defined as the middle value in a list of data.

Match each of the following terms with the correct statement. -Population Mean

When data are analyzed in order to make inferences from a smaller group of data to a larger group of data, the larger group of data is referred to as the

In Janell's study, she finds the sum of squares for her variable is 20. She also has five participants in her study. What is her variance (s²= SS/ (N - 1.)?

What are measures of variability?

If a data set has two modes, it is said to be bimodal.

What is the median for the following set of numbers? 100 87 36 35 29

Kurtosis lets a researcher know whether or not her or his data are flat or peaked.

A sample is used to best represent a portion of the population.

An Introduction to Communication Research

Empirical Research

Research Ethics

Searching for Previous Research and American Psychological Association Style

Research Structure and Literature Reviews

Variables

Measurement

Reliability and Validity

Survey Research

Content Analysis

Experimental Design

Sampling Methods

Hypothesis Testing

Chi-Square 2 Test of Independence

Independent Samples T Tests

One-Way Analysis of Variance

Correlation

Regression

Presenting Research

Statistical Tests and Concepts in Research Analysis

Filters

Exam 14: Descriptive Statistics

In his study Joey receives a kurtosis of .87. Which of the following is an accurate statement based on Joey's kurtosis?

To create a _______________, simply record the number of occurrences for each value in the dataset.

Distinguish between descriptive and inferential statistics.

What is the kurtosis for the following set of numbers? 100 87 36 35 29

Explain the purpose of skewness and kurtosis.

What variables are usually analyzed using descriptive statistics? In what section of a research study might audiences find descriptive statics reported?

Inferential statistical tests allow researchers to make inferences about some unknown aspect of a sample from a population.

Match each of the following terms with the correct statement. -Standard Deviation

Mode is defined as the middle value in a list of data.

Match each of the following terms with the correct statement. -Population Mean

When data are analyzed in order to make inferences from a smaller group of data to a larger group of data, the larger group of data is referred to as the

In Janell's study, she finds the sum of squares for her variable is 20. She also has five participants in her study. What is her variance (s2 = SS/ (N - 1.)?

What are measures of variability?

If a data set has two modes, it is said to be bimodal.

What is the median for the following set of numbers? 100 87 36 35 29

Kurtosis lets a researcher know whether or not her or his data are flat or peaked.

A sample is used to best represent a portion of the population.

An Introduction to Communication Research

Empirical Research

Research Ethics

Searching for Previous Research and American Psychological Association Style

Research Structure and Literature Reviews

Variables

Measurement

Reliability and Validity

Survey Research

Content Analysis

Experimental Design

Sampling Methods

Hypothesis Testing

Chi-Square 2 Test of Independence

Independent Samples T Tests

One-Way Analysis of Variance

Correlation

Regression

Presenting Research

Statistical Tests and Concepts in Research Analysis

Filters

In Janell's study, she finds the sum of squares for her variable is 20. She also has five participants in her study. What is her variance (s²= SS/ (N - 1.)?