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

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Measures of Centre and Spread
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Median

Middle value in ordered data set

Median position for nn values

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

Range RR

Largest data value - smallest data value

Q1Q_1 definition

Value with 25% of data below, 75% above

Q3Q_3 definition

Value with 75% of data below, 25% above

IQR formula

Q3−Q1Q_3 - Q_1

Mean formula using ∑\sum notation

xˉ=∑xn\bar{x} = \frac{\sum x}{n}

Use median when distribution is

Skewed or has outliers

Use mean when distribution is

Symmetric with no outliers

Standard deviation symbol

ss

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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