Chapter 1 | Data Analysis Flashcards
1
Q
What are the types of variables
A
quantitative
Categorical
2
Q
What graphs are used for categorical values?
A
Bar graph
Pie chart
3
Q
What graphs are used for quantitative values?
A
Stem and leaf plots
Histograms
Boxplots
4
Q
What is the pattern of the data in a quantitative distribution described by?
A
Shape, center, spread
5
Q
How do you find the quartiles?
A
Q1 is the median of the lower half of the data
Q3 is the median of the upper half of the data
6
Q
How do you define the interquartile range?
A
the interquartile range is called a resistant measure of the spread of a distribution
7
Q
What is needed to graph the distribution of a variable?
A
The possible values for the variable and how often each value of the variable occurs.
