SCM Ch. 2 Flashcards
Class
a category in a frequency distribution.
Continuous Data
values that can take on any value within a given range; continuous data are often the result of measuring observations rather than counting them.
Cumulative Percentage Polygon (ogive)
a line graph that plots the cumulative relative frequency distribution.
Cumulative Relative Frequency Distribution
a frequency distribution that totals the proportion of the observations that are less than or equal to the class at which you are looking.
Discrete Data
values based on observations that can be counted; they are restricted to integer values (whole numbers).
Frequency Distribution
A table that shows the number of data observations that fall into specific intervals.
Histogram
A bar graph showing the number of observations in each class as the height of each bar.
Percentage Polygon
graphs the midpoint of each class as a line rather than a column. The height of each midpoint represents the relative frequency of the corresponding class.
Relative Frequency Distribution
a frequency distribution that displays the proportion of observations of each class relative to the total number of observations.
Symmetrical Distribution
the shape of a distribution when its two halves mirror one another.
Clustered Bar Chart
a chart that displays qualitative data that have been organized in categories and can be arranged vertically or horizontally.
Horizontal Bar Chart
a bar chart that displays the bars in a horizontal direction.
Pareto Chart
a bar chart that shows in a decreasing order the frequency of the categories that cause quality control problems.
Pie Chart
a chart that displays categories in the shape of a pie; each segment of the pie reps the relative frequency of that category.
Stacked Bar Chart
a bar chart that groups several values in a single column within the same category in a vertical direction.
