12.2 Frequency Distribution and Statistical Graphs Flashcards
1
Q
Data
A
A single response to an experiment
2
Q
Frequency distribution
A
A listing of the observed values and the corresponding frequency of occurrence of each value
3
Q
Classes
A
Grouped data
Follow rules:
1. Classes should not be the same width
2. Classes should not overlap
3. Each piece of data should belong to only one class.
4
Q
Spread
A
Lowest value to highest value
5
Q
Modal class
A
Highest frequency in frequency distribution
6
Q
Histogram
A
A graph with observed values on its horizontal scale and frequencies on its vertical scale
7
Q
Frequency polygon
A
Line graphs with scales the same as those of the histogram
8
Q
Stem-and-lead display
A
A tool that organizes and groups the data while allowing us to see the actual values that make up the data
