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BSNS 112 MIDTERM QUESTIONS AND
ANSWERS 2025
What does quantitative data use? - correct answer- Means
What is discrete data? - correct answer- Quantitative.
Measured in specific values
What is continuous data? - correct answer- Quantitative.
Measure in infinite values
What does qualitative data use? - correct answer- Proportions
What is ordinal data? - correct answer- Qualitative. Conveys a
ranking
What is nominal data? - correct answer- Qualitative. Uses
labels (no ranking)
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What variables does a cross tabulation table use? - correct
answer- Categorical and categorical
What variables does a scatter plot use? - correct answer-
Numerical and numerical
What variable(s) does a frequency table use? - correct answer-
One categorical variable
What variables does a stacked/clustered bar chart use? -
correct answer- Categorical and categorical
What variables does a relative frequency histogram use? -
correct answer- Categorical and numerical
Define mean - correct answer- Simple average
Define median - correct answer- Middle value when data is
ranked
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Define mode - correct answer- Most frequent value
Define trimmed mean - correct answer- Average when most
extreme 5% of data is cut
Define range - correct answer- maximum - minimum
Define interquartile range - correct answer- 75th percentile -
25th percentile
Define variance - correct answer- spread of data around mean
(σ²)
What happens when standard deviation increases? - correct
answer- Graph widens
Define coefficient of variation - correct answer- Compares
variability between groups with different magnitudes
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Coefficient of variation equation - correct answer- SD / x̅ where
x̅ is the sample mean
What does it mean by a positively skewed graph? - correct
answer- Tail trails to the right. Mean > Median > Mode
What does it mean by a negative skewed graph? - correct
answer- Tail trails to the left. Mode > Median > Mean
When is a graph significantly skewed? - correct answer-
Skewness more than twice the standard error
Define kurtosis - correct answer- Measure of the extent to
which observations cluster around a central point
What is the normal distribution kurtosis value? - correct answer-
0
Define positive kurtosis - correct answer- Data clusters more in
the centre
BSNS 112 MIDTERM QUESTIONS AND
ANSWERS 2025
What does quantitative data use? - correct answer- Means
What is discrete data? - correct answer- Quantitative.
Measured in specific values
What is continuous data? - correct answer- Quantitative.
Measure in infinite values
What does qualitative data use? - correct answer- Proportions
What is ordinal data? - correct answer- Qualitative. Conveys a
ranking
What is nominal data? - correct answer- Qualitative. Uses
labels (no ranking)
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What variables does a cross tabulation table use? - correct
answer- Categorical and categorical
What variables does a scatter plot use? - correct answer-
Numerical and numerical
What variable(s) does a frequency table use? - correct answer-
One categorical variable
What variables does a stacked/clustered bar chart use? -
correct answer- Categorical and categorical
What variables does a relative frequency histogram use? -
correct answer- Categorical and numerical
Define mean - correct answer- Simple average
Define median - correct answer- Middle value when data is
ranked
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Define mode - correct answer- Most frequent value
Define trimmed mean - correct answer- Average when most
extreme 5% of data is cut
Define range - correct answer- maximum - minimum
Define interquartile range - correct answer- 75th percentile -
25th percentile
Define variance - correct answer- spread of data around mean
(σ²)
What happens when standard deviation increases? - correct
answer- Graph widens
Define coefficient of variation - correct answer- Compares
variability between groups with different magnitudes
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Coefficient of variation equation - correct answer- SD / x̅ where
x̅ is the sample mean
What does it mean by a positively skewed graph? - correct
answer- Tail trails to the right. Mean > Median > Mode
What does it mean by a negative skewed graph? - correct
answer- Tail trails to the left. Mode > Median > Mean
When is a graph significantly skewed? - correct answer-
Skewness more than twice the standard error
Define kurtosis - correct answer- Measure of the extent to
which observations cluster around a central point
What is the normal distribution kurtosis value? - correct answer-
0
Define positive kurtosis - correct answer- Data clusters more in
the centre
