What is a frequency histogram?

A bar graph that represents the frequency distribution of a data set.

A line graph that shows trends over time.

A pie chart that shows proportions of categories.

A scatter plot that shows relationships between variables.

What does the horizontal scale in a frequency histogram measure?

The frequencies of the classes.

The total number of data points.

How do you find the class boundaries when data entries are integers?

Subtract 0.5 from each lower class boundary and add 0.5 to each upper class boundary.

Add 1 to each lower class boundary and subtract 1 from each upper class boundary.

Multiply each class boundary by 2.

Divide each class boundary by 2.

What should you plot on a frequency polygon to represent each class?

Both the midpoint and frequency

What does a relative frequency histogram represent?

The relative frequency distribution of a data set

The absolute frequency distribution of a data set

The cumulative frequency distribution of a data set

What is a cumulative frequency graph?

A line graph that displays the cumulative frequency of each class at its upper class boundary

A bar graph that displays the frequency of each class

A pie chart that shows the percentage of each class

A scatter plot that shows the relationship between two variables

Which of the following is a property of a cumulative frequency graph?

It begins at the lower boundary of the first class and ends at the upper boundary of the last class

It begins at the upper boundary of the first class

It connects the points representing the lower class boundaries

It uses a logarithmic scale for the vertical axis

What is a stem-and-leaf plot?

A way to display quantitative data graphically by separating each data entry into a stem and leaf.

A way to display qualitative data graphically.

A method to separate data into categories.

A technique to summarize data using pie charts.

A way to graph quantitative data using points above a horizontal axis

A way to graph qualitative data using bars

A method to display data using lines

A technique to show data using pie charts

What is the first step in constructing a dot plot?

Choose an appropriate scale for the horizontal axis

Describe any patterns in the data

Stack data entries of the same value

A circle divided into sectors representing categories

A graph that uses bars to represent data

A chart that uses lines to connect data points

A table that lists data in rows and columns

What formula is used to find the central angle in a pie chart?

central angle = 360°(relative frequency)

central angle = 180°(relative frequency)

central angle = 90°(relative frequency)

central angle = 270°(relative frequency)

What does a scatter plot show?

The relationship between two quantitative variables

The distribution of a single variable

In a scatter plot, what do the points represent?

Ordered pairs in a coordinate plane

What is a time series chart?

A chart that shows quantitative entries at regular intervals over time

A chart that shows data at irregular intervals

A chart that shows qualitative data

A chart that shows data without any time reference

What is the mean of a data set?

The sum of the data entries divided by the number of entries.

The middle value of the data set.

The data entry with the greatest frequency.

The difference between the highest and lowest values.

How do you find the median of a data set?

Order the data entries and find the middle entry.

Add all the data entries and divide by the number of entries.

Identify the entry with the greatest frequency.

Subtract the smallest entry from the largest entry.

What is the mode of a data set?

The data entry that occurs with the greatest frequency.

The average of all data entries.

The middle value of the data set.

What is an outlier in a data set?

A data entry that is far removed from the other entries

A data entry that is the average of the set

A data entry that is the most frequent

A data entry that is the median

What is a weighted mean?

The mean of a data set whose entries have varying weights

The mean of a data set with equal weights

The mean of a data set with no weights

The mean of a data set with only one weight

What is the definition of a symmetric frequency distribution?

If a vertical line is drawn through the middle of the graph, then the two halves would be mirror images.

All entries have approximately equal frequencies.

The tail of the graph extends more to the left.

The tail of the graph extends more to the right.

In a uniform (or rectangular) distribution, how are the frequencies of the entries?

All entries have approximately equal frequencies.

The tail of the graph extends more to the right.

The tail of the graph extends more to the left.

Frequencies increase towards the middle.

Data Distribution Quiz Quiz

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a frequency distribution?

A graph showing data trends over time

A table that shows classes or intervals of data entries with a count of the number of entries in each class

A chart that displays the median of a data set

A list of all data points in a set

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What characteristics should you look for when organizing and describing data?

Color, size, and shape

Center, variability (or spread), and shape

Length, width, and height

Speed, distance, and time

What is the class width in the given example?

4

5

6

9

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many classes should you include in a frequency distribution for best results?

1 to 5

5 to 7

7 to 10

11 to 15

What is the minimum data entry for the frequency distribution of the prices of men's running shoes?

98

99

100

101

What is the total frequency for the frequency distribution of the number of pets per household in Mrs. Lin's 3rd grade class?

28

30

25

32

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula to find the midpoint of a class in a frequency distribution?

(lower class limit) + (upper class limit)

2

(lower class limit) - (upper class limit)

2

(lower class limit) * (upper class limit)

2

(lower class limit) / (upper class limit)

2

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Data Distribution Quiz

What is a frequency distribution?

What characteristics should you look for when organizing and describing data?

What is the class width in the given example?

How many classes should you include in a frequency distribution for best results?

What is the minimum data entry for the frequency distribution of the prices of men's running shoes?

What is the total frequency for the frequency distribution of the number of pets per household in Mrs. Lin's 3rd grade class?

What is the formula to find the midpoint of a class in a frequency distribution?

How do you calculate the relative frequency of a class?

What is the cumulative frequency of the class 111 – 166?

What is the midpoint of a class 31 – 41?

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