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