##### QBA exam 1

frequency distribution

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

frequency distribution table

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

percent frequency

the percentage of responses for each category

relative frequency x 100

pie chart

a way to graphically display frequency responses for a variable

bar charts

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

cumulative relative frequency

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

scatterplots

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

negative relationships

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

positive relationships

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