Maths Exam Prep Questions and Answers 2026

Maths Exam Prep Questions and Answers 2026


Question:
What does quantitative data use?
Answer:
Means


Question:
What is discrete data?
Answer:
Quantitative. Measured in specific values


Question:
What is continuous data?
Answer:
Quantitative. Measure in infinite values


Question:
What does qualitative data use?
Answer:
Proportions


Question:
What is ordinal data?
Answer:
Qualitative. Conveys a ranking


Question:
What is nominal data?
Answer:
Qualitative. Uses labels (no ranking)

,Question:
What variables does a cross tabulation table use?
Answer:
Categorical and categorical


Question:
What variables does a scatter plot use?
Answer:
Numerical and numerical


Question:
What variable(s) does a frequency table use?
Answer:
One categorical variable


Question:
What variables does a stacked/clustered bar chart use?
Answer:
Categorical and categorical


Question:
What variables does a relative frequency histogram use?
Answer:
Categorical and numerical


Question:
Define mean
Answer:
Simple average


Question:

,Define median
Answer:
Middle value when data is ranked


Question:
Define mode
Answer:
Most frequent value


Question:
Define trimmed mean
Answer:
Average when most extreme 5% of data is cut


Question:
Define range
Answer:
maximum - minimum


Question:
Define interquartile range
Answer:
75th percentile - 25th percentile


Question:
Define variance
Answer:
spread of data around mean (σ²)


Question:
What happens when standard deviation increases?
Answer:

, Graph widens


Question:
Define coefficient of variation
Answer:
Compares variability between groups with different magnitudes


Question:
Coefficient of variation equation
Answer:
SD / x̅ where x̅ is the sample mean


Question:
What does it mean by a positively skewed graph?
Answer:
Tail trails to the right. Mean > Median > Mode


Question:
What does it mean by a negative skewed graph?
Answer:
Tail trails to the left. Mode > Median > Mean


Question:
When is a graph significantly skewed?
Answer:
Skewness more than twice the standard error


Question:
Define kurtosis
Answer:
Measure of the extent to which observations cluster around a central point