Measures of Centre (VCE SSCE General Mathematics): Flashcards

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Measures of Centre
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Definition of a statistic

Any number calculated from data

Measures of centre

Statistics showing where the 'middle' or 'typical' value lies

Mean formula using notation

xˉ=Σxn\bar{x} = \frac{\Sigma x}{n}

Meaning of Σ\Sigma symbol

Sum of

xˉ\bar{x} notation meaning

The mean

Definition of the median

The middle value when observations are arranged in order

First step before finding median

Arrange all observations in ascending order

Median position when nn is odd

(n+12)\left(\frac{n+1}{2}\right)th observation

When to use the median

When data is skewed or contains outliers

How extreme values affect the mean

The mean is pulled towards extreme values

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 Quizzes 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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