Question 1

To convert a proportion to a percentage, you should ______.

Accepted Answer

A)  do nothing - they are the same. 
B)  divide it by 100 and add a "%" 
C)  multiply it by 100 and add a "%" 
D)  divide the number in a calculator and report the resulting value 
A)  do nothing - they are the same. 
B)  divide it by 100 and add a "%" 
C)  multiply it by 100 and add a "%" 
D)  divide the number in a calculator and report the resulting value

Question 2

For the following questions, consider the dataset below collected from a sample of trainees:
 $\begin{array}{ccc} 
& \text { Training } & \text { Test score } \
\hline 1 & \text { A } & 12 \
2 & \text { A } & 9 \
3 & \text { B } & 6 \
4 & \text { B } & 10 \
5 & \text { C } & 30 \
\hline
\end{array}$ Test scores represent the number of test questions trainees answered correctly on the post-training survey.
-What is the cumulative frequency of Training C?

Accepted Answer

A)  0.1 
B)  0.2 
C)  1 
D)  2 
A)  0.1 
B)  0.2 
C)  1 
D)  2

Question 3

If n = 20, and 5 appears 4 times in the variable being examined, the rel. f of 5 for that variable is .25.

Accepted Answer

A) True 
 B)False

Question 4

If N = 500, there are 500 subjects in the sample.

Accepted Answer

A) True 
 B)False

Question 5

For which of the following variables would a histogram be appropriate?

Accepted Answer

A)  favourite colour 
B)  job title 
C)  month 
D)  age in years 
A)  favourite colour 
B)  job title 
C)  month 
D)  age in years

Question 6

An illustration of qualitative data representing a variable's categories as portions of a circle is a ______.

Accepted Answer

A)  bar chart 
B)  histogram 
C)  frequency polygon 
D)  pie chart 
A)  bar chart 
B)  histogram 
C)  frequency polygon 
D)  pie chart

Question 7

When writing formulas, it is more common to use proportions than it is to use fractions.

Accepted Answer

A) True 
 B)False

Question 8

When should you translate data with a bar chart?

Accepted Answer

A)  when you have qualitative data 
B)  when you have nominal data 
C)  when you have ordinal data 
D)  all of these 
A)  when you have qualitative data 
B)  when you have nominal data 
C)  when you have ordinal data 
D)  all of these

Question 9

Why is it important to accurately depict data?

Accepted Answer

A)  because you can be misled by others' poor translations of that data 
B)  because you can mislead others with your poor translations of that data 
C)  because you could mislead yourself with your poor translations or that data 
D)  all of these 
A)  because you can be misled by others' poor translations of that data 
B)  because you can mislead others with your poor translations of that data 
C)  because you could mislead yourself with your poor translations or that data 
D)  all of these

Question 10

For the following questions, consider the dataset below collected from a sample of trainees:
 $\begin{array}{ccc} 
& \text { Training } & \text { Test score } \
\hline 1 & \text { A } & 12 \
2 & \text { A } & 9 \
3 & \text { B } & 6 \
4 & \text { B } & 10 \
5 & \text { C } & 30 \
\hline
\end{array}$ Test scores represent the number of test questions trainees answered correctly on the post-training survey.
-The scale of measurement for the Training variable above is ______.

Accepted Answer

A)  qualitative 
B)  quantitative 
C)  nominal 
D)  ratio 
A)  qualitative 
B)  quantitative 
C)  nominal 
D)  ratio

Question 11

Which of the following represents population size?

Accepted Answer

A)  n 
B)  N 
C)  p 
D)  P 
A)  n 
B)  N 
C)  p 
D)  P

Question 12

Frequency polygons are similar to histograms except ______.

Accepted Answer

A)  frequency polygons use lines instead of bars to represent frequencies 
B)  histograms can be used represent more than two frequency distributions 
C)  frequency polygons represent frequencies on the x-axis 
D)  frequency polygons represent data more clearly than a histogram 
A)  frequency polygons use lines instead of bars to represent frequencies 
B)  histograms can be used represent more than two frequency distributions 
C)  frequency polygons represent frequencies on the x-axis 
D)  frequency polygons represent data more clearly than a histogram

Question 13

Which of these should you use to address the following question? "What is the relationship between number of sales and employee job satisfaction?"

Accepted Answer

A)  scatterplot 
B)  bar chart 
C)  pie chart 
D)  frequency polygon 
A)  scatterplot 
B)  bar chart 
C)  pie chart 
D)  frequency polygon

Question 14

A concise definition of a statistical concept using statistical notation is a ______.

Accepted Answer

A)  formula 
B)  operational definition 
C)  graph 
D)  none of these 
A)  formula 
B)  operational definition 
C)  graph 
D)  none of these

Question 15

Histograms should always use a bin size of 10.

Accepted Answer

A) True 
 B)False

Question 16

If you want to convert from a frequency to a relative frequency, you should ______.

Accepted Answer

A)  count how many times a value appears in your dataset 
B)  divide the frequency by the sample size 
C)  divide the sample size by the frequency 
D)  count the total number of values in the dataset 
A)  count how many times a value appears in your dataset 
B)  divide the frequency by the sample size 
C)  divide the sample size by the frequency 
D)  count the total number of values in the dataset

Question 17

For the following questions, consider the dataset below collected from a sample of trainees:
 $\begin{array}{ccc} 
& \text { Training } & \text { Test score } \
\hline 1 & \text { A } & 12 \
2 & \text { A } & 9 \
3 & \text { B } & 6 \
4 & \text { B } & 10 \
5 & \text { C } & 30 \
\hline
\end{array}$ Test scores represent the number of test questions trainees answered correctly on the post-training survey.
-The best way to compare the Training variable and the Test Score variable would be ______.

Accepted Answer

A)  a bar chart 
B)  a histogram 
C)  a scatterplot 
D)  a frequency polygon 
A)  a bar chart 
B)  a histogram 
C)  a scatterplot 
D)  a frequency polygon

Question 18

For the following dataset, what does cum. f equal for the value "5"?
[3, 1, 4, 5, 2, 1, 3, 5, 2, 1]

Accepted Answer

A)  2 
B)  0.2 
C)  0.8 
D)  1 
A)  2 
B)  0.2 
C)  0.8 
D)  1

Question 19

For the following questions, consider the dataset below collected from a sample of trainees:
 $\begin{array}{ccc} 
& \text { Training } & \text { Test score } \
\hline 1 & \text { A } & 12 \
2 & \text { A } & 9 \
3 & \text { B } & 6 \
4 & \text { B } & 10 \
5 & \text { C } & 30 \
\hline
\end{array}$ Test scores represent the number of test questions trainees answered correctly on the post-training survey.
-The best translation for the Training variable above would be ______.

Accepted Answer

A)  a bar chart 
B)  a histogram 
C)  a scatterplot 
D)  a frequency polygon 
A)  a bar chart 
B)  a histogram 
C)  a scatterplot 
D)  a frequency polygon

Question 20

For the following questions, consider the dataset below collected from a sample of trainees:
 $\begin{array}{ccc} 
& \text { Training } & \text { Test score } \
\hline 1 & \text { A } & 12 \
2 & \text { A } & 9 \
3 & \text { B } & 6 \
4 & \text { B } & 10 \
5 & \text { C } & 30 \
\hline
\end{array}$ Test scores represent the number of test questions trainees answered correctly on the post-training survey.
-What is n in the dataset above?

Accepted Answer

A)  2 
B)  5 
C)  10 
D)  cannot be determined from the dataset provided 
A)  2 
B)  5 
C)  10 
D)  cannot be determined from the dataset provided

To convert a proportion to a percentage, you should ______.

If n = 20, and 5 appears 4 times in the variable being examined, the rel. f of 5 for that variable is .25.

If N = 500, there are 500 subjects in the sample.

For which of the following variables would a histogram be appropriate?

An illustration of qualitative data representing a variable's categories as portions of a circle is a ______.

When writing formulas, it is more common to use proportions than it is to use fractions.

When should you translate data with a bar chart?

Why is it important to accurately depict data?

Which of the following represents population size?

Frequency polygons are similar to histograms except ______.

Which of these should you use to address the following question? "What is the relationship between number of sales and employee job satisfaction?"

A concise definition of a statistical concept using statistical notation is a ______.

Histograms should always use a bin size of 10.

If you want to convert from a frequency to a relative frequency, you should ______.

For the following dataset, what does cum. f equal for the value "5"? [3, 1, 4, 5, 2, 1, 3, 5, 2, 1]

For the following questions, consider the dataset below collected from a sample of trainees: Training Test score 1 A 12 2 A 9 3 B 6 4 B 10 5 C 30 Test scores represent the number of test questions trainees answered correctly on the post-training survey. -What is n in the dataset above?

The Language of Statistics

Central Tendency and Variability

Probability Distributions

Sampling Distributions

Estimation and Confidence Intervals

Hypothesis Testing

Tests for Significance: Z-Tests and One-Sample T-Tests

Tests for Significance: Paired and Independent-Samples T-Test

Analysis of Variance Anova

CHI-Squared Tests of Fit

Correlation R and Regression Y BX A

Matching Statistical Tests to Business Problems

Filters

Exam 2: Working With Numbers and Data Display

To convert a proportion to a percentage, you should ______.

If n = 20, and 5 appears 4 times in the variable being examined, the rel. f of 5 for that variable is .25.

If N = 500, there are 500 subjects in the sample.

For which of the following variables would a histogram be appropriate?

An illustration of qualitative data representing a variable's categories as portions of a circle is a ______.

When writing formulas, it is more common to use proportions than it is to use fractions.

When should you translate data with a bar chart?

Why is it important to accurately depict data?

Which of the following represents population size?

Frequency polygons are similar to histograms except ______.

Which of these should you use to address the following question? "What is the relationship between number of sales and employee job satisfaction?"

A concise definition of a statistical concept using statistical notation is a ______.

Histograms should always use a bin size of 10.

If you want to convert from a frequency to a relative frequency, you should ______.

For the following dataset, what does cum. f equal for the value "5"? [3, 1, 4, 5, 2, 1, 3, 5, 2, 1]

For the following questions, consider the dataset below collected from a sample of trainees: Training Test score 1 A 12 2 A 9 3 B 6 4 B 10 5 C 30 Test scores represent the number of test questions trainees answered correctly on the post-training survey. -What is n in the dataset above?

The Language of Statistics

Central Tendency and Variability

Probability Distributions

Sampling Distributions

Estimation and Confidence Intervals

Hypothesis Testing

Tests for Significance: Z-Tests and One-Sample T-Tests

Tests for Significance: Paired and Independent-Samples T-Test

Analysis of Variance Anova

CHI-Squared Tests of Fit

Correlation R and Regression Y BX A

Matching Statistical Tests to Business Problems

Filters