QBA exam 1

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created 6 years ago by allyfox
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chapter 2 qba
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1

frequency distribution

how often we get a certain number/response in our data

2

frequency distribution table

a table that displays the frequency for each value of a variable

3

percent frequency

the percentage of responses for each category

relative frequency x 100

4

pie chart

a way to graphically display frequency responses for a variable

5

bar charts

displays the frequency or relative frequency of responses of a categorical/qualitative variable

6

cumulative relative frequency

the relative frequency of the interval + the cumulative relative frequency of the previous interval

7

scatterplots

allow us to look at the interaction or relationship between 2 quantitative variables

8

negative relationships

as the value of one variable increases, the value of the other variable decreases

9

positive relationships

as the value of one variable increases, the value of the other variable also increases, or vice versa