Question 1

What is the graph below known as? 
A)1-D boxplot
B)Clustered bar chart
C)Clustered boxplot
D)Simple boxplot

Accepted Answer

The graph shows multiple boxplots clustered together, making it a clustered boxplot.

Question 2

What can we say about the graph below? 
A)There is a negative relationship between the number of cigarettes smoked per day before the intervention and the number of cigarettes smoked after the intervention.
B)There is no relationship between the two variables
C)The participants who smoked the most cigarettes per day before the intervention, smoked the fewest cigarettes per day after the intervention.
D)There is a positive relationship between the number of cigarettes smoked per day before the intervention and the number of cigarettes smoked after the intervention..

Accepted Answer

D

Question 3

Imagine we took a group of smokers, recorded how many cigarettes they smoked each day and then split them randomly into one of two 6-week interventions; 'hypnosis' or 'nicotine patch'. After the 6 weeks, we again recorded how many cigarettes they smoked each day and subtracted this number from the number of cigarettes they each smoked pre-intervention, to produce a intervention success score for each participant. Out of the following options, which would be the best method of displaying the results?
A)A simple bar chart with the variable 'intervention method' on the y-axis and 'intervention success' on the x-axis.
B)A simple boxplot with the variable 'intervention method' on the x-axis and 'intervention success' on the y-axis.
C)A clustered boxplot with 'intervention success' on the y-axis and 'intervention method' on the x-axis
D)A simple boxplot with the variable 'intervention method' on the y-axis and 'intervention success' on the x-axis.

Accepted Answer

A simple boxplot with 'intervention method' on the x-axis and 'intervention success' on the y-axis is the best method because it allows for easy comparison between the two intervention groups while displaying the distribution of the intervention success scores, including the median, quartiles, and potential outliers.

Question 4

Based on the chart, what was the median mark (approximately)?

A)58%
B)77%
C)65%
D)72%

Accepted Answer

To find the median, we need to arrange the marks in ascending order, which gives us: 35%, 45%, 65%, 72%, 77%, 85%. The middle value is 65%, making it the median mark.

Question 5

Imagine we took a group of smokers, recorded the number of cigarettes they smoked each day, whether they wanted to quit smoking or not, and then split them randomly into one of two 6-week interventions; 'hypnosis' or 'nicotine patch'. After the 6 weeks, we again recorded how many cigarettes they smoked each day and subtracted this number from the number of cigarettes they each smoked pre-intervention, to produce an intervention success score for each participant. Out of the following options, which would be the best method of looking at which intervention was the most successful, taking into account whether the participant wanted to quit or not?
A)Clustered boxplot
B)Frequency polygon
C)Simple histogram
D)Population pyramidb.

Accepted Answer

A clustered boxplot can be used to compare the success scores for each intervention group while also taking into account whether the participant wanted to quit or not. The boxplot can be split into two groups based on whether the participant wanted to quit or not, and then further split by intervention group. This will allow for a visual comparison of the success scores within each group and intervention.

Question 6

What does the graph below show? 
A)Both groups show a positively skewed distribution.
B)Both groups show a negatively skewed distribution.
C)For those who used nicotine patches there is a fairly normal distribution, whereas those who used hypnosis show a slightly negatively skewed distribution.
D)For those who used nicotine patches there is a fairly normal distribution, whereas those who used hypnosis show a positively skewed distribution.

Accepted Answer

The answer of What does the graph below show? 
A)Both...

Question 7

Approximately what is the median success score for those in the hypnosis group who did not want to quit? 
A)1.00
B)0.00
C)-1.00
D)2.00

Accepted Answer

The answer of Approximately what is the median success score...

Question 8

Looking at the graph below, which intervention was the most successful at reducing the number of cigarettes smoked each day in those who wanted to quit? 
A)Both interventions were equally successful.
B)Neither group had any effect.
C)Nicotine patches
D)Hypnosis

Accepted Answer

The graph shows that the group using nicotine patches had a higher rate of success in reducing the number of cigarettes smoked each day compared to the hypnosis group. Therefore, nicotine patches were the most successful intervention.

Question 9

In IBM SPSS, the following graph is known as a: 
A)Simple scatterplot
B)Scatterplot matrix
C)Summary point plot
D)Grouped scatterplot

Accepted Answer

The answer of In IBM SPSS, the following graph is...

Question 10

Based on the chart, what was the interquartile range of marks (approximately). 
A)7%
B)22%
C)47%
D)14%

Accepted Answer

The answer of Based on the chart, what was the...

Question 11

Approximately what is the mean success score for those who wanted to quit in the hypnosis group? 
A)The graph does not display the mean.
B)-1.00
C)1.00
D)0.00

Accepted Answer

The graph does not display the mean of the success scores for those who wanted to quit in the hypnosis group.

Question 12

Looking at the graph below, which of the following statements are correct? 
A)On average, for those who wanted to quit smoking, the nicotine patches reduced the number of cigarettes smoked per day, whereas hypnosis actually increased the number of cigarettes smoked per day.
B)On average, the nicotine intervention was more successful in those who wanted to quit smoking than in those who did not want to quit, whereas the hypnosis intervention was more successful in those who did not want to quit smoking than in those who did.
C)All of the statements are correct.
D)Overall, the nicotine intervention was the most successful at reducing the number of cigarettes smoked per day.

Accepted Answer

The answer of Looking at the graph below, which of...

Question 13

What does a histogram show?
A)A histogram is a graph in which values of observations are plotted on the horizontal axis, and the frequency with which each value occurs in the data set is plotted on the vertical axis.
B)A histogram is a graph in which values of observations are plotted on the horizontal axis, and their density is plotted on the vertical axis.
C)A histogram is a graph in which levels of the independent variable are plotted on the horizontal axis, and the mean of observations is plotted on the vertical axis.
D)A histogram is a graph in which values of one variable are plotted against values of a different variable.

Accepted Answer

A histogram shows the frequency distribution of a single variable, where the values of observations are plotted on the horizontal axis and the frequency of these values is plotted on the vertical axis. It is a graphical representation of a frequency distribution. Choice B is incorrect because a histogram does not show density but the frequency of values. Choice C is incorrect because a histogram does not plot the mean of observations. Choice D is incorrect because a histogram is a graph of a single variable, not two different variables.

Question 14

Which of the following statements best describes the graph below? 
A)The graph shows that for those who used nicotine patches there is a fairly normal distribution, whereas those who used hypnosis show a skewed distribution, where a very small proportion of people (relative to those using nicotine) smoke more than 2 cigarettes per day.
B)The graph shows that for those who used hypnosis there is a fairly normal distribution, whereas those who used nicotine patches show a skewed distribution, where a very large proportion of people (relative to those using nicotine) smoke less than 4 cigarettes per day.
C)The graph looks fairly unsymmetrical, indicating that the two groups are from different populations.
D)The graph looks fairly symmetrical.This indicates that both groups had a similar spread of scores before the intervention.

Accepted Answer

The answer of Which of the following statements best describes...

Question 15

In IBM SPSS, what is this graph known as? 
A)Simple bar chart
B)Clustered bar chart
C)Frequency polygon
D)A histogram

Accepted Answer

The answer of In IBM SPSS, what is this graph...

Question 16

Looking at the graph below, which intervention was the most successful at reducing the number of cigarettes smoked each day in those who did not want to quit? 
A)Nicotine patches
B)Hypnosis
C)Both interventions were equally successful.
D)Neither group had any effect at all.b.

Accepted Answer

The graph clearly shows a significant decrease in the number of cigarettes smoked per day in the group using nicotine patches, while the group receiving hypnosis showed only a slight decrease. Therefore, nicotine patches were the most successful intervention at reducing the number of cigarettes smoked each day in those who did not want to quit.

Question 17

Looking at the graph below, approximately what was the median success score for the nicotine group? 
A)-5.00
B)1.00
C)2.00
D)-1.00c.

Accepted Answer

The answer of Looking at the graph below, approximately what...

Question 18

What is the graph below known as? 
A)Population pyramid
B)Stacked histogram
C)Frequency polygon
D)Stacked bar chart

Accepted Answer

The graph shows the distribution of age and gender in a population, with males on one side and females on the other. This is known as a population pyramid. Option B is incorrect because a histogram would show the distribution of a single variable, not two like in this graph. Option C is incorrect because a frequency polygon would show the distribution of a single variable, not two like in this graph. Option D is incorrect because a stacked bar chart would show the composition of a single variable, not the distribution of multiple variables like in this graph.

Question 19

A study was done to investigate the effect of 'motivation to quit' on the success rate of a new intervention developed to reduce the number of cigarettes smoked per day in a group of smokers. Looking at the graph below, what can we say about the relationship between motivation to quit and the success rate of the intervention? 
A)Whether a person wanted to quit smoking had no effect on the success of the smoking intervention.
B)There were the same number of people who wanted to quit smoking as who didn't.
C)We can't say anything about the success of the intervention because the graph does not take into account the number of cigarettes smoked per day pre-intervention.
D)The medians were the same in people who wanted to quit smoking and those that didn't.

Accepted Answer

The graph only shows the success rate of the intervention and the motivation to quit, but it does not provide information about the number of cigarettes smoked per day before the intervention. Therefore, we cannot draw any conclusions about the relationship between motivation to quit and success of the intervention.

Question 20

What is this graph known as? 
A)A box-whisker diagram
B)A scatterplot
C)A histogram
D)An error bar chart

Accepted Answer

This graph displays the distribution of a numerical variable through quartiles and outliers, which is characteristic of a box-whisker diagram. A scatterplot displays the relationship between two numerical variables, a histogram shows the distribution of a numerical variable through intervals or bins, and an error bar chart displays estimates of the variability of data.

Quiz 5: Exploring Data With Graphs

What is the graph below known as?

What can we say about the graph below?

Based on the chart, what was the median mark (approximately) ?

What does the graph below show?

Approximately what is the median success score for those in the hypnosis group who did not want to quit?

Looking at the graph below, which intervention was the most successful at reducing the number of cigarettes smoked each day in those who wanted to quit?

In IBM SPSS, the following graph is known as a:

Based on the chart, what was the interquartile range of marks (approximately) .

Approximately what is the mean success score for those who wanted to quit in the hypnosis group?

Looking at the graph below, which of the following statements are correct?

What does a histogram show?

Which of the following statements best describes the graph below?

In IBM SPSS, what is this graph known as?

Looking at the graph below, which intervention was the most successful at reducing the number of cigarettes smoked each day in those who did not want to quit?

Looking at the graph below, approximately what was the median success score for the nicotine group?

What is the graph below known as?

What is this graph known as?