Ch3 - Representations of Data Flashcards
1
Q
Outliers
A
Q3+K(Q3-Q1)
Q1 - K(Q3-Q1)
2
Q
Cleaning the Data
A
The process of removing anomalies from a data set
3
Q
On a histogram, to calculate height of the bar (Frequency Density)
A
Area of bar = k x Frequency
4
Q
Frequency Polygon
A
Joining the middle of the top of each bar on a histogram with equal class widths forms a frequency polygon.
5
Q
When comparing data sets comment on:
A
- Measures of location
- Measure of spread
6
Q
If K=1
A
Frequency Density = Frequency / class width. (Easiest value to use when drawing histogram)
