Blatchley Chapter 03 Quiz

. Histograms show ___________ on the y-axis and ________ on the x-axis

frequencies; denomination

observations; frequencies

frequencies; observations

observations; grouped frequencies

. The x-axis was formally known as the _______________; the y-axis was formally known as the _________________.

ordinate; depth

ordinate; latitudinate

ordinate; abscissa

abscissa; ordinate

.

Below are some data about whether an individual ever learned how to swim, using this data, please respond to questions 3 – 7.

This data is best described as...

Participant ID	Yes or No
1	No
2	Yes
3	Yes
4	No
5	No
6	No
7	Yes
8	Yes
9	No
10	No

continuous

on an interval scale

discrete

None of the above

. This type of data is best conveyed via a...?

histogram

bar chart

frequency polygon

stem and leaf plot

. What percentage of the participants have at some point learned how to swim?

40%

60%

100%

50%

. How many individuals in this sample never learned how to swim?

10

4

6

8

. If you created a plot for this graph, what would each axis represent?

y-axis would represent the observation and x-axis would represent the frequency

y-axis would represent the observation and x-axis would represent the participant number

y-axis would represent the frequency and x-axis would represent the observation

y-axis would represent the participant ID and x-axis would represent the observation

. Discrete data suggests that...

There are an infinite number of possible points between two points on the measurement scale

Between any two adjacent data points there is exactly two possible measurement

Between any two adjacent data points there are no possible measurements

There are exactly three categories of possible measures

. Which of the following is usually not an example of discrete data?

Gender as male/female/do not wish to respond

Binary responses such as 'occurred' or 'did not occur'

If individuals have prefer a yellow or red water bottle

Individuals' body mass index (note: body mass index is calculated by a mathematical formula using an individuals height and weight)

. Which of the following is true about continuous and discrete data?

Discrete data are generally on an ordinal scales whereas continuous data are on nominal scales

Discrete data are generally on nominal and ordinal scales whereas continuous data are generally on interval or ratio data

The type of measurement scale does not impact the type of data you get at all

Discrete data require fewer participants than continuous scales

. Continuous data suggests that...

Participants' responses lie on a continuum from negative to positive infinity.

There are in theory an infinite number of possible data points between two arbitrarily adjacent points on a scale.

There must be exactly 1 unit between two adjacent points.

There are no possible measurements between any two adjacent data points.

. A frequency histogram is best used when data is ________________ while a bar chart is best used when the data is __________________.

on an ordinal scale; on a nominal scale

on a ratio scale; discrete

discrete; continuous

discrete; on an ordinal scale

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

3 would be the stem, and 57 as the leaf.

35 as the stem, and 7 as the leaf.

357 is the stem, there is no leaf.

There is no stem, and 357 are all leaf.

. Why would you opt to use a stem-and-leaf graph over histograms and bar charts?

They are used to present different types of data.

Histograms and bar charts cannot be used for discrete data.

Stem and leaf plots are a method of grouping data without losing each datum.

Stem-and-leaf plots cannot be used for continuous data and you lose too much valuable information when using it.

. Which of the following is most similar to a frequency polygon with regards to its purpose and interpretation?

Pie chart

Histogram

Scatter plot

Bar chart

. Frequency polygons are an ideal alternative to frequency polygons when the data are _____________________.

qualitative

continuous

nominal

discrete

. Pie charts can be useful when presenting...

nominal data such as favorite type of beverage

quantitative data such as height

data on nominal and ratio scales

relationships between multiple variables

. In a situation when you have two continuous variables and you are trying to portray the relationship between the two, which of the following is best used?

Histogram

Bar chart

Pie chart

Scatterplot

. Which of the following is not true about scatter plots?

Generally, they plots two continuous variables

They plots the relations between two variables

They plot the means of two or more variables

They are not generally useful for discrete data

. A researcher is interested in examining the effects of screen time and child development. He collects information about how often young children watched tv, and the duration (i.e., time) of their temper tantrums. To visualize this data, the best option would be a...

frequency polygon

scatterplot

histogram

piechart

. In a time-series plot, a plot with 2 peaks is best described as...

unimodal

uniform

bimodal

normal

. Which of the following best describes using graphs to represent data?

Graphs are objective ways to represent data that cannot manipulate the way data is viewed, unlike other methods.

Graphs can be useful tools, but not always.

Graphs can only be used for inferential statistics.

Graphs are best used when you have small amounts of data, or they would end up being overwhelming.

. Which of the following should be done, when creating a graph?

Ensure that the data are continuous

Ensure that axis, if present, are labeled

Ensure that you have as small a sample as possible

All of the above

. In which situation below is the use of graphs potentially dangerous?

when the data do not show any meaningful results

when the presenter of the graph over interprets what the data itself warrants

when the viewer of the graph questions the validity of what is being presented

when the presenter of the graph uses a scatterplot to present data about the relationship between two continuous variables

. Which of the following is not a safe assumption with respect to using a graph?

the creator of a graph could have manipulated the visualization to make the data look more appealing

any graph as presented is the best way to visualize the data objectively

graphs can help visualize data effectively

None of the above are dangerous assumptions to be making about graphs

Blatchley Chapter 03 Quiz

Quiz Content