Question 1

Which of the following is NOT true about Tukey's stem-and-leaf plots?

Accepted Answer

A) presents the data horizontally instead of vertically 
B) presents all of the numbers in the set 
C) can result in a single stem for some data sets 
D) represents missing values with 0 or 99 
A) presents the data horizontally instead of vertically 
B) presents all of the numbers in the set 
C) can result in a single stem for some data sets 
D) represents missing values with 0 or 99

Question 2

What did Dr.Snow do to show very effectively that his hypothesis was correct and thereby demonstrated the cause-effect relationship he advocated?

Accepted Answer

A) drank from the Broad Street well 
B) removed the pump handle from the Broad Street well 
C) isolated the bacteria from the Broad Street well 
D) performed an autopsy on one of the victims before the city council 
E) all of the above 
A) drank from the Broad Street well 
B) removed the pump handle from the Broad Street well 
C) isolated the bacteria from the Broad Street well 
D) performed an autopsy on one of the victims before the city council 
E) all of the above

Question 3

For the following set of numbers 21, 22, 25, 25, 27, 29, 30, 32, 33, 34, 35, 36, 36, 38, 39, 39, 39, 40, 42, 44, 45, 56, 57, 59, 60, 60, 60, set up a frequency distribution table with interval widths of 10 (starting at 20-29).What is the frequency of the second interval?

Accepted Answer

A) 6 
B) 8 
C) 11 
D) 4 
A) 6 
B) 8 
C) 11 
D) 4

Question 4

A positively skewed distribution is also said to be

Accepted Answer

A) skewed normally 
B) skewed left 
C) skewed down 
D) skewed up 
E) none of the above 
A) skewed normally 
B) skewed left 
C) skewed down 
D) skewed up 
E) none of the above

Question 5

The main difference between a bar graph and a histogram is

Accepted Answer

A) two-dimensional bars instead of three-dimensional bars 
B) vertical instead of a horizontal presentation 
C) bar graphs have spaces between bars and histograms don't 
D) they are identical in every aspect 
A) two-dimensional bars instead of three-dimensional bars 
B) vertical instead of a horizontal presentation 
C) bar graphs have spaces between bars and histograms don't 
D) they are identical in every aspect

Which of the following is NOT true about Tukey's stem-and-leaf plots?

What did Dr.Snow do to show very effectively that his hypothesis was correct and thereby demonstrated the cause-effect relationship he advocated?

For the following set of numbers 21, 22, 25, 25, 27, 29, 30, 32, 33, 34, 35, 36, 36, 38, 39, 39, 39, 40, 42, 44, 45, 56, 57, 59, 60, 60, 60, set up a frequency distribution table with interval widths of 10 (starting at 20-29).What is the frequency of the second interval?

A positively skewed distribution is also said to be

The main difference between a bar graph and a histogram is

A Gentle Introduction

Statistical Parameters: Measures of Central Tendency and Variation

Standard Scores, the Z Distribution, and Hypothesis Testing

Inferential Statistics: The Controlled Experiment, Hypothesis Testing, and the Z Distribution

An Introduction to Correlation and Regression

The T Test for Independent Groups

The T Test for Dependent Groups

Analysis of Variance Anova: One-Factor Completely Randomized Design

After a Significant Analysis of Variance: Multiple Comparison Tests

Analysis of Variance Anova: One-Factor Repeated-Measures Design

Analysis of Variance: Two-Factor Completely Randomized Design

Post Hoc Analysis of Factorial Anova

Factorial Anova: Additional Designs

Nonparametric Statistics: The Chi-Square Test

Other Statistical Parameters and Tests

Filters

Exam 2: Descriptive Statistics: Understanding Distributions of Numbers

Which of the following is NOT true about Tukey's stem-and-leaf plots?

What did Dr.Snow do to show very effectively that his hypothesis was correct and thereby demonstrated the cause-effect relationship he advocated?

For the following set of numbers 21, 22, 25, 25, 27, 29, 30, 32, 33, 34, 35, 36, 36, 38, 39, 39, 39, 40, 42, 44, 45, 56, 57, 59, 60, 60, 60, set up a frequency distribution table with interval widths of 10 (starting at 20-29).What is the frequency of the second interval?

A positively skewed distribution is also said to be

The main difference between a bar graph and a histogram is

A Gentle Introduction

Statistical Parameters: Measures of Central Tendency and Variation

Standard Scores, the Z Distribution, and Hypothesis Testing

Inferential Statistics: The Controlled Experiment, Hypothesis Testing, and the Z Distribution

An Introduction to Correlation and Regression

The T Test for Independent Groups

The T Test for Dependent Groups

Analysis of Variance Anova: One-Factor Completely Randomized Design

After a Significant Analysis of Variance: Multiple Comparison Tests

Analysis of Variance Anova: One-Factor Repeated-Measures Design

Analysis of Variance: Two-Factor Completely Randomized Design

Post Hoc Analysis of Factorial Anova

Factorial Anova: Additional Designs

Nonparametric Statistics: The Chi-Square Test

Other Statistical Parameters and Tests

Filters