# Stats Unit 3 Flash Cards

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Class Intervals
Is when continuous data is covered on a scale, as to cover all possible values
1 of 11
Handling Rounded Data
All possible values that round to the same digit are in the same class
2 of 11
Frequency Tables for Continuous Data
Is when the class intervals are used for the classes/data type for the frequency
3 of 11
Cumulative Frequency Diagram
Is when the cumulative frequencies are plotted against their upper class boundries
4 of 11
Histogram
Is similar to a bar chart but the 'bars' represent the class intervals.
5 of 11
Frequency Polygon
Is when a line from the middle of each histogram bar is drawn
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Unequal Class Histograms
If the class intervals are not equal, then the area of the bar shows the frequency
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Population Pyramid
Shows the distribution of age groups in a population
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Chloropleth Map
Shos the regions of an area/country shaded to represent proportions of the statistic
9 of 11
Is when the scale doesn't begin at 0 and then goes up in a peculiar way
10 of 11
By making a graph look 3D, measuring the angles/bars can be difficult without a key/scale
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## Other cards in this set

### Card 2

#### Front

All possible values that round to the same digit are in the same class

#### Back

Handling Rounded Data

### Card 3

#### Front

Is when the class intervals are used for the classes/data type for the frequency

### Card 4

#### Front

Is when the cumulative frequencies are plotted against their upper class boundries

### Card 5

#### Front

Is similar to a bar chart but the 'bars' represent the class intervals.