Chapter 2.2

​________ classes are classes with boundaries that do not overlap. ​Open-ended Mutually exclusive ​Equal-size ​Close-ended

Mutually exclusive

________ are values that can take on any real​ numbers, including numbers that contain decimal​ points; these data are often the result of measuring observations rather than counting them. Discrete Continuous ​Cross-sectional Ordinal

Continuous

​________ data are values based on observations that can be counted and are typically represented by whole numbers. Discrete Time series Nominal Continuous

Discrete

Continuous data are values based on observations that can be counted and are typically represented by whole numbers.

False

Histograms displaying continuous data have gaps between their bars.

False

Quantitative data are values that are​ categorical, describing a characteristic such as gender or level of education.

False

A frequency distribution is a table that shows the number of data observations that fall into specific intervals.

True

Continuous data is often the result of measuring observations rather than counting them.

True

Histograms displaying discrete data usually have gaps between their bars.

True

The cumulative percentage polygon is a line graph that plots the cumulative relative frequency distribution.

True

The sum of the relative frequencies for the relative frequency distribution should be equal to or very close to 1.0 due to rounding.

True

A​ ________ is a graph showing the number of observations in each class of a frequency distribution. histogram frequency distribution relative frequency distribution polygon

histogram

The​ ________ is a line graph that plots the cumulative relative frequency distribution. ogive scatter plot percentage polygon histogram

ogive

The class​ ________ is the​ breadth, or​ range, of numbers we plan to put into each class of a frequency distribution using grouped quantitative data. number boundary frequency width

width