Maths Exam Prep Questions and Answers 2026
Question:
Categorical (Qualitative) data is either:
Answer:
Nominal (stand alone/label); or
Ordinal (ordered/ranked)
Question:
Numerical (Quantitative) data is either:
Answer:
Discrete (whole numbers)
Continuous (infinite options)
Question:
Ways to present categorical data:
Answer:
Bar graphs (percentages labelled), Pie graphs, Cross tabulations, Stacked bar graph, clustered bar
charts
Question:
Range
Answer:
Maximum - minimum
Question:
Variance
Answer:
Squared deviation around the mean
Question:
, Coefficient of variation
Answer:
Relative measure of variability
Question:
A skewness value more than its standard error is taken to indicate a departure from symmetry.
Answer:
twice, significant
Question:
Left skew
Answer:
Negative skew
Question:
Right skew
Answer:
Positive skew
Question:
Kurtosis
Answer:
Extent to which observations cluster around a central point and fatness of tails.
Question:
Empirical rule
Answer:
Values for Z and t
Question:
Which distribution is the odd one out w.r.t. skewness? A. Incomes B. Household debt C. Age when
people retire D. Capital value of publicly listed companies
Question:
Categorical (Qualitative) data is either:
Answer:
Nominal (stand alone/label); or
Ordinal (ordered/ranked)
Question:
Numerical (Quantitative) data is either:
Answer:
Discrete (whole numbers)
Continuous (infinite options)
Question:
Ways to present categorical data:
Answer:
Bar graphs (percentages labelled), Pie graphs, Cross tabulations, Stacked bar graph, clustered bar
charts
Question:
Range
Answer:
Maximum - minimum
Question:
Variance
Answer:
Squared deviation around the mean
Question:
, Coefficient of variation
Answer:
Relative measure of variability
Question:
A skewness value more than its standard error is taken to indicate a departure from symmetry.
Answer:
twice, significant
Question:
Left skew
Answer:
Negative skew
Question:
Right skew
Answer:
Positive skew
Question:
Kurtosis
Answer:
Extent to which observations cluster around a central point and fatness of tails.
Question:
Empirical rule
Answer:
Values for Z and t
Question:
Which distribution is the odd one out w.r.t. skewness? A. Incomes B. Household debt C. Age when
people retire D. Capital value of publicly listed companies
