Describing Data

Frequency tables, bar and pie charts, histograms, reading modes and skew, and catching graphs that mislead through scale or three-dimensional distortion.

Math in Society, Describing Data

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8 exercises

Exercise 1

True or False: The bars of a histogram should always touch.

2.5

Exercise 2

True or False: The bars of a bar graph should always touch.

2.5

Exercise 3

Is the data described categorial or quantitative?

In a study, you ask the subjects their age in years.
In a study, you ask the subjects their gender.
In a study, you ask the subjects their ethnicity.
The daily high temperature of a city over several weeks.
A person's annual income.

2.5

Exercise 4

Is the data described categorical or quantitative?

In a study you ask the subjects how many siblings they have.
In a study you ask the subjects what their favorite movie genre is.
In a study to measure the subjects' blood pressure.
The daily rainfall in a city over several weeks.
In a study you ask the subjects the amount they spend on housing each month

2.5

Exercise 5

What types of graphs are used for categorical data?

2.5

Exercise 6

What types of graphs are used for quantitative data?

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Exercise 15

The following table is from a sample of five hundred homes in Oregon that were asked the primary source of heating in their home.

How many of the households heat their home with firewood?
What percent of households heat their home with natural gas?

2.5

Exercise 16

The following table is from a sample of 50 undergraduate students at Portland State University.

What percent of the sampled students are below senior class?
How many of the sampled students are freshmen?

2.5