STA2023_ Summary Statistics.

STA2023: Summary Statistics
A number that arises from a set or sample of data is a what? - correct answer-Statistic

R = range = ? - correct answer-max - min

IQR = Interquartile Range = ? - correct answer-Q3 - Q1

Lower Fence = ? - correct answer-Q1 - (1.5 * IQR)

Upper Fence = ? - correct answer-Q3 + (1.5 * IQR)

x-bar = ? - correct answer-Average/mean

Σx = ? - correct answer-Total value

Σx^2 = ? - correct answer-Total squares

Sx = ? - correct answer-Sample standard deviation

σx = ? - correct answer-Population standard deviation

n = ? - correct answer-Sample size

minX = ? - correct answer-Minimum

Q1 = ? - correct answer-1st quartile

Q2/Med = ? - correct answer-2nd quartile/median

Q3 = ? - correct answer-3rd quartile

maxX = ? - correct answer-Maximum

What are the four shapes of a histogram? - correct answer-Uniform, bell-shaped,
right-skewed, left-skewed

Would a right-skewed histogram be heavier on the left, or the right? - correct answer-Left

These types of graphs allow us to compare counts or percentages among classes of data. -
correct answer-Histograms

What does the horizontal axis of a histogram show? - correct answer-Values of the variable

What does the vertical axis of a histogram show? - correct answer-Counts (percentages)