Exam 2026 Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded
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What type of
variable?:
eye color - ANSWER-
nominal
What type of
variable?:
socioeconomic status with categories low, med, high -
ANSWER-Ordinal
What type of
variable?:
Temperature - ANSWER-
Interval
What type of
variable?:
Income - ANSWER-
Ratio
, Visual display and numerical summary for a single
categorical variable -
ANSWER-pie chart or bar
chart
and category
percentages
Visual display and numerical summary for a single
quantitative variable -
ANSWER-histogram or
stemplot
and descriptive
statistics
Center of a random variable distribution is measured by its -
ANSWER-mean
Spread of a random variable distribution is measured by
its - ANSWER-
variance or standard
deviation
Rules for the linear transformation of one random
variable - ANSWER-
μ(a+b)X=a+b μX
σ^2a+bX=b^2σ^2X
1. Usual