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STA2023_ Summary Statistics
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STA2023_ Summary Statistics
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STA2023: Summary StatisticsA 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)
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