Question 1

Each point on scatterplot represents…

Accepted Answer

A)  one observation from one variable for one individual 
B)  two observations from two variables for the same individual 
C)  the mean 
D)  two observations from two variables for two individuals 
A)  one observation from one variable for one individual 
B)  two observations from two variables for the same individual 
C)  the mean 
D)  two observations from two variables for two individuals

Question 2

If you have a dataset plotting relative frequencies of individuals'' favorite color, which of the following is most appropriate?

Accepted Answer

A)  bar charts 
B)  histograms and frequency polygons 
C)  pie charts 
D)  scatter plots 
A)  bar charts 
B)  histograms and frequency polygons 
C)  pie charts 
D)  scatter plots

Question 3

When a graph is used, it can always be assumed that it is the best and correct way to visualize data.

Accepted Answer

A) True 
 B)False

Question 4

Which would be the correct way to split the number 357 in a stem-and-leaf graph?

Accepted Answer

A)  3 would be the stem, and 57 as the leaf. 
B)  35 as the stem, and 7 as the leaf. 
C)  357 is the stem, there is no leaf. 
D)  There is no stem, and 357 are all leaf. 
A)  3 would be the stem, and 57 as the leaf. 
B)  35 as the stem, and 7 as the leaf. 
C)  357 is the stem, there is no leaf. 
D)  There is no stem, and 357 are all leaf.

Question 5

In a stem-and-leaf plot, which of the following is true?

Accepted Answer

A)  It is more like a table: you can extract every data point from the dataset 
B)  Generally, if you have values like 10 and 20, 1 and 2 would be the stems, and 0 would be the leaves. 
C)  They are useful because they group data without losing information 
D)  All of the above 
A)  It is more like a table: you can extract every data point from the dataset 
B)  Generally, if you have values like 10 and 20, 1 and 2 would be the stems, and 0 would be the leaves. 
C)  They are useful because they group data without losing information 
D)  All of the above

Question 6

Using the data below about how many airline miles each participant accrued over the span of the year
 $$\begin{array} { c c } 
\text { No. of miles } & f \
0 - 4999 & 241 \
5000 - 9999 & 452 \
10000 - 14999 & 540 \
15000 - 19999 & 869 \
20000 - 24999 & 823 \
25000 - 29999 & 972 \
30000 - 34999 & 1004 \
35000 - 39999 & 1138 \
40000 - 44999 & 1034 \
45000 - 49999 & 1497 \
50000 - 54999 & 1429 \
55000 - 59999 & 1471 \
60000 - 64999 & 1365 \
65000 - 69999 & 1372 \
70000 - 74999 & 1241 \
75000 - 79999 & 821 \
80000 - 84999 & 624 \
85000 - 89999 & 246 \
90000 - 94999 & 168 \
95000 - 99999 & 34
\end{array}$$ Is this a type of data discrete or continuous?

Accepted Answer

The answer of Using the data below about how many...

Question 7

Which of the following the best description of discrete data?

Accepted Answer

A)  Discrete data are on ratio scales 
B)  Discrete data are generally on nominal and ordinal scale 
C)  Discrete data are best presented in histograms 
D)  Discrete data should not be graphed. 
A)  Discrete data are on ratio scales 
B)  Discrete data are generally on nominal and ordinal scale 
C)  Discrete data are best presented in histograms 
D)  Discrete data should not be graphed.

Question 8

Explain why graphs sometimes need to be interpreted with caution

Accepted Answer

Graphs can be used to mislead the reader

Question 9

Histograms show ___________ on the ordinate and ________ on the abscissa

Accepted Answer

A)  frequencies; groups 
B)  frequencies; observations 
C)  observations; frequencies 
D)  observations; groups 
A)  frequencies; groups 
B)  frequencies; observations 
C)  observations; frequencies 
D)  observations; groups

Question 10

A customer service center is interested in how many calls they get during different times of the day. They record the number of calls they receive ever two hours (time here is presented in military time).
 $$\begin{array} { c c } 
\hline \text { Time } & \text { Calls } \
\hline 2 : 00 & 62 \
4 : 00 & 97 \
6 : 00 & 54 \
8 : 00 & 43 \
10 : 00 & 114 \
12 : 00 & 172 \
14 : 00 & 143 \
16 : 00 & 82 \
18 : 00 & 42 \
20 : 00 & 27 \
22 : 00 & 10 \
24 : 00 & 3 \
\hline
\end{array}$$ Would this data be best described as a unimodal or bimodal distribution?

Accepted Answer

The answer of A customer service center is interested in...

Question 11

When graphing a relationship between two variables, which of the following would the best option to do so?

Accepted Answer

A)  Histogram 
B)  Bar chart 
C)  Pie chart 
D)  Scatterplot 
A)  Histogram 
B)  Bar chart 
C)  Pie chart 
D)  Scatterplot

Question 12

Histograms and Bar Charts are similar in that they plot frequencies on the y-axis and possible observations on the x-axis.

Accepted Answer

A) True 
 B)False

Question 13

In a frequency polygon, each point on the graph represents the _____________ of a(n)___________.

Accepted Answer

A)  relative proportion; observation 
B)  frequency; observation 
C)  observation; individual 
D)  None of the above. 
A)  relative proportion; observation 
B)  frequency; observation 
C)  observation; individual 
D)  None of the above.

Question 14

One reason why scientists didn't always trust the data was because graphs don't show raw data

Accepted Answer

A) True 
 B)False

Question 15

Identify three good practices involving the use of graphs

Accepted Answer

Answers may vary. Below are some example

Question 16

Consider a data with two outcomes: yes and no. The best way to plot this data is…

Accepted Answer

A)  Bar chart 
B)  Pie chart 
C)  Histogram 
D)  Stem-and-leaf graph 
A)  Bar chart 
B)  Pie chart 
C)  Histogram 
D)  Stem-and-leaf graph

Question 17

Graphs are the best and necessary method for presenting data.

Accepted Answer

A) True 
 B)False

Question 18

Below are some data about whether a sample of individuals knows how to ride a bicycle
 $$\begin{array} { c c } 
\hline \text { Participant ID } & \text { Yes or No } \
\hline 1 & \text { Yes } \
2 & \text { Yes } \
3 & \text { No } \
4 & \text { No } \
5 & \text { Yes } \
6 & \text { No } \
7 & \text { Yes } \
8 & \text { Yes } \
9 & \text { Yes } \
10 & \text { No } \
11 & \text { Yes } \
12 & \text { No } \
13 & \text { No } \
14 & \text { No } \
15 & \text { Yes } \
\hline
\end{array}$$ How many participants do not know how to ride a bicycle?

Accepted Answer

The answer of Below are some data about whether a...

Each point on scatterplot represents…

If you have a dataset plotting relative frequencies of individuals'' favorite color, which of the following is most appropriate?

When a graph is used, it can always be assumed that it is the best and correct way to visualize data.

Which would be the correct way to split the number 357 in a stem-and-leaf graph?

In a stem-and-leaf plot, which of the following is true?

Which of the following the best description of discrete data?

Explain why graphs sometimes need to be interpreted with caution

Histograms show ___ on the ordinate and on the abscissa

When graphing a relationship between two variables, which of the following would the best option to do so?

Histograms and Bar Charts are similar in that they plot frequencies on the y-axis and possible observations on the x-axis.

In a frequency polygon, each point on the graph represents the ___ of a(n)_.

One reason why scientists didn't always trust the data was because graphs don't show raw data

Identify three good practices involving the use of graphs

Consider a data with two outcomes: yes and no. The best way to plot this data is…

Graphs are the best and necessary method for presenting data.

Below are some data about whether a sample of individuals knows how to ride a bicycle Participant ID Yes or No 1 Yes 2 Yes 3 No 4 No 5 Yes 6 No 7 Yes 8 Yes 9 Yes 10 No 11 Yes 12 No 13 No 14 No 15 Yes How many participants do not know how to ride a bicycle?

Introduction: Statistics--Who Needs Them

Types of Data

Measures of Central Tendency: Whats so Average About the Mean

Variability: the Law of Life

Where Am I Normal Distributions and Standard Scores

Basic Probability Theory

The Central Limit Theorem and Hypothesis Testing

The Z-Test

The T-Test

Analysis of Variance

Confidence Intervals and Effect Size: Building a Better Mousetrap

Correlation and Regression: Are We Related

The Chi-Square Test

Non-Parametric Tests

Which Test Should I Use and Why

Filters

Exam 3: A Picture Is Worth a Thousand Words: Creating and Interpreting Graphics

Each point on scatterplot represents…

If you have a dataset plotting relative frequencies of individuals'' favorite color, which of the following is most appropriate?

When a graph is used, it can always be assumed that it is the best and correct way to visualize data.

Which would be the correct way to split the number 357 in a stem-and-leaf graph?

In a stem-and-leaf plot, which of the following is true?

Which of the following the best description of discrete data?

Explain why graphs sometimes need to be interpreted with caution

Histograms show ___________ on the ordinate and ________ on the abscissa

When graphing a relationship between two variables, which of the following would the best option to do so?

Histograms and Bar Charts are similar in that they plot frequencies on the y-axis and possible observations on the x-axis.

In a frequency polygon, each point on the graph represents the _____________ of a(n)___________.

One reason why scientists didn't always trust the data was because graphs don't show raw data

Identify three good practices involving the use of graphs

Consider a data with two outcomes: yes and no. The best way to plot this data is…

Graphs are the best and necessary method for presenting data.

Below are some data about whether a sample of individuals knows how to ride a bicycle Participant ID Yes or No 1 Yes 2 Yes 3 No 4 No 5 Yes 6 No 7 Yes 8 Yes 9 Yes 10 No 11 Yes 12 No 13 No 14 No 15 Yes How many participants do not know how to ride a bicycle?

Introduction: Statistics--Who Needs Them

Types of Data

Measures of Central Tendency: Whats so Average About the Mean

Variability: the Law of Life

Where Am I Normal Distributions and Standard Scores

Basic Probability Theory

The Central Limit Theorem and Hypothesis Testing

The Z-Test

The T-Test

Analysis of Variance

Confidence Intervals and Effect Size: Building a Better Mousetrap

Correlation and Regression: Are We Related

The Chi-Square Test

Non-Parametric Tests

Which Test Should I Use and Why

Filters

Histograms show ___ on the ordinate and on the abscissa

In a frequency polygon, each point on the graph represents the ___ of a(n)_.