# Stats Unit 2 Flash Cards

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Tally
Is when data is counted in groups of five, written as litlle lines
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Frequency Table
Is when raw data is processed
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Grouping Data
Is when the data is too widely spread, so it is put into classes
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Cumulative Frequency
Is when the total number of observations that are less than/equal to the value. Add the frequency of last group to frequency of current group, to get CF
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Two-way Table
Is when the frequencies for two different data categories are displayed in the same table
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Pictogram
Is when pictures/symbols are used to represent an amount of data
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Line Graph
Is when the frequency of the group is represented by the length of the line
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Bar Chart
Is when the frequency of the group is represented by the length of the bar
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Stem and Leaf Diagram
Is when the distribution of the data is shown without losing the data detail
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Pie Chart
Is when the data is shown as a proportion of the whole. Also show how it is shared/divided up
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Cumulative Frequency Step Polygon
Is used when the data is discrete and ungrouped
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Multiple Bar Charts
Are when many different bar charts are put together on the same axis, as to compare data
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Composite Bar Chart
Can show how the total frequency for each catagory is divided up between the seperate groups
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Comparative Pie Chart
Is when two pie chart are drawn side by side to compare the frequencies of the pie charts
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## Other cards in this set

### Card 2

#### Front

Is when raw data is processed

Frequency Table

### Card 3

#### Front

Is when the data is too widely spread, so it is put into classes

### Card 4

#### Front

Is when the total number of observations that are less than/equal to the value. Add the frequency of last group to frequency of current group, to get CF

### Card 5

#### Front

Is when the frequencies for two different data categories are displayed in the same table