Stats Module 2

frequency table

displays number of times a certian value appears

relative frequency

ratio of frequency of specific variable/ total # frequency

cumulative frequency

sum of frequency of all proceeding categories

grouped frequency distribution table

used there’s a wide range of data sets

pie chart

displays relative frequency of each category w/i qualitative data

bar chart

set of bars that display absolute/relative frequencies of qualitative data

histogram

set of bars that display absolute/relative frequencies of quantitative data

frequency polygon

line graph that displays absolute/relative frequencies

3D graphs

3 dimensions/axes

stem/ leaf plots

display frequencies of quantitative data when data is small; stem 1st digit; leaf last digit

mode

value w/ highest frequency

mean

average

median

midpoint

outlier

extreme value that’s way smaller/larger

variablity

indicates whether data cluster around mean/ spread out from mean

range

highest-lowest

Q1

lowest 1/4; median of lower half

Q2

median

Q3

upper 1/4; median of upper half

IQR

Q3-Q1

box plot

quartiles, box; whiskers, min/ max