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Yr 11 General Math 1

Chapter 2 - VCE General Maths Revision

Types of categorical data are Nominal and Ordinal
Numerical variables are generated in number form
Discrete and continuous variables are types of Numerical variables
The number of pages in a book is a Discrete variable
Percentage Frequency is Count/Total X 100
The mode is The most common number in a set of data
A Bar chart is drawn with gaps to show that every category is individual
A Histogram is drawn without gaps to show that values are continuous
In a positively skewed distribution, the values will be less clustered to the right
In a negatively skewed distribution, the values will be less clustered to the Left
In a stem and leaf plot, the leaves are the Ones
The mean is calculated by sum of the data values divided by the total number of data values
The median is the Middle number in an ordered set of data
The range is the largest value - the smallest value
The standard deviation measures The spread of the data about the mean
An Outlier is A data value that is well outside the collected data
The frequency is always displayed along the Y axis
When a set of data is equal either side of the median, the data is Symmetrical
When several data points have the same value in a dot plot - The values are stacked on top of each other
The box in a box plot shows The middle 50% of scores
Created by: mhanse10