Last updated on Sep 20, 2026

Measures of Centre and Spread (VCE SSCE General Mathematics): Quizzes

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Measures of Centre and Spread

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For $n$ data values, at what position is the median located?

$\left(\frac{n+1}{2}\right)$ th position

Find the median of: $1, 1, 2, 3, 3, 5, 8, 8, 9$

$3$

What is the formula for the range, $R$ ?

Largest value - smallest value

What percentage of data is below the first quartile ( $Q_1$ )?

$25\%$

What is the formula for the interquartile range (IQR)?

$IQR = Q_3 - Q_1$

What does the formula $\bar{x} = \frac{\sum x}{n}$ calculate?

The mean

Which measure is resistant to outliers?

Median

When should you use the median rather than the mean?

When data is skewed or has outliers

What does the IQR measure?

Spread of the middle $50\%$ of data

For symmetric data with no outliers, which measures should be paired together?

Mean and standard deviation

Explore VCE SSCE General Mathematics Revision Notes by Topics

Classifying and Displaying Categorical Data

Interpreting and Describing Frequency Tables and Bar Charts

Displaying and Describing Numerical Data

Characteristics of Distributions, Dot Plots, and Stem Plots

Measures of Centre

Measures of Spread

Percentages of Data Lying Within Multiple Standard Deviations of the Mean

Boxplots

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

Show more

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

The Normal Distribution and the 68–95–99.7% Rule

Explore VCE SSCE General Mathematics Model Answers by Topics

Classifying and Displaying Categorical Data

Interpreting and Describing Frequency Tables and Bar Charts

Displaying and Describing Numerical Data

Characteristics of Distributions, Dot Plots, and Stem Plots

Measures of Centre

Measures of Spread

Percentages of Data Lying Within Multiple Standard Deviations of the Mean

Boxplots

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

Show more

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

The Normal Distribution and the 68–95–99.7% Rule

Explore VCE SSCE General Mathematics Flashcards by Topics

Classifying and Displaying Categorical Data

Interpreting and Describing Frequency Tables and Bar Charts

Displaying and Describing Numerical Data

Characteristics of Distributions, Dot Plots, and Stem Plots

Measures of Centre

Measures of Spread

Percentages of Data Lying Within Multiple Standard Deviations of the Mean

Boxplots

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

Show more

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

The Normal Distribution and the 68–95–99.7% Rule

Explore VCE SSCE General Mathematics Exam Questions by Topics

Classifying and Displaying Categorical Data

Interpreting and Describing Frequency Tables and Bar Charts

Displaying and Describing Numerical Data

Characteristics of Distributions, Dot Plots, and Stem Plots

Measures of Centre

Measures of Spread

Percentages of Data Lying Within Multiple Standard Deviations of the Mean

Boxplots

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

Show more

Comparing the Distribution of a Numerical Variable Across Groups

Types of Data

Displaying and Describing the Distributions of Categorical Variables

Displaying and Describing Numerical Data - Further Exploration

Dot Plots and Stem Plots

Using a Logarithmic (Base 10) Scale to Display Data

Measures of Centre and Spread

The Five-Number Summary and the Boxplot

The Normal Distribution and the 68–95–99.7% Rule

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