Statistics Chapter 2
the_____ ______ lists each category of data and the number of occurrences for each category
frequency distribution
a ___ is constructed by drawing rectangles of each class of data. the height of each rectangle is the frequency or relative frequency of the class. the width of each rectangle is the same and the rectangles touch each other.
histogram
what is a pie chart
is a circle divided into sectors. each sector represents a category of data.
a frequency distrubtuion lists the ___ of occurences of each category of data, while a relative frequency distribution lists the ___ of occurences of each category of data
number, proportion
the ____ ____ relative frequency is the proportion (or percent) of observations within a category and is found using the formula Frequency divided by sum of all frequencies
relative frequency
A ___ ____ ____ lists each category of data together with the relative frequency
relative frequency distribution
the _____ is the smallest value within the class and the ___ is the largest value within the class
lower class limit, upper class limit
a ____ ____ ___ is obtained by plotting the time in which a variable is measured on the horizontal axis and the corresponding value of the variable on the vertical axis.
time series plot
what is a pareto chart
a bar graph where the data is in descending order
a __ __ is constructed by labeling each category of data on either horizontal or vertical axis and the frequency or relative frequency of the category on the other axis.
bar graph
the ____ is the difference between consecutive lower class limits
class widths
____ are classes by which data are grouped
classes