BUAL-2600 Gramling Exam UPDATED
ACTUAL QUESTIONS AND CORRECT
ANSWERS
Mean (x̄ or μ) - CORRECT ANSWER Average of the data values
Median - CORRECT ANSWER Middle value
Mode - CORRECT ANSWER Most frequent value
Unimodal - CORRECT ANSWER Dataset only has 1 mode
Bimodal - CORRECT ANSWER Dataset has two modes
Multimodal - CORRECT ANSWER Dataset has 3+ modes
If the shape is unimodal & symmetric - CORRECT ANSWER Report the mean
If the shape is skewed - CORRECT ANSWER Report the median (and IQR)
Range - CORRECT ANSWER Max-Min
IQR (interquartile range) - CORRECT ANSWER Q3 - Q1
Five Number Summary (Five key numbers used for a box plot) - CORRECT ANSWER Min,
Q1, Median, Q3, Max
Variance (population) - CORRECT ANSWER Average of squared deviations from the mean
(Standard Deviation squared)
ACTUAL QUESTIONS AND CORRECT
ANSWERS
Mean (x̄ or μ) - CORRECT ANSWER Average of the data values
Median - CORRECT ANSWER Middle value
Mode - CORRECT ANSWER Most frequent value
Unimodal - CORRECT ANSWER Dataset only has 1 mode
Bimodal - CORRECT ANSWER Dataset has two modes
Multimodal - CORRECT ANSWER Dataset has 3+ modes
If the shape is unimodal & symmetric - CORRECT ANSWER Report the mean
If the shape is skewed - CORRECT ANSWER Report the median (and IQR)
Range - CORRECT ANSWER Max-Min
IQR (interquartile range) - CORRECT ANSWER Q3 - Q1
Five Number Summary (Five key numbers used for a box plot) - CORRECT ANSWER Min,
Q1, Median, Q3, Max
Variance (population) - CORRECT ANSWER Average of squared deviations from the mean
(Standard Deviation squared)
