Statistics 3

Question 1

2 types of outliers

Answer 1

1. Legitimate values
2. Anomalies (should be removed as they’re misleading)

Question 2

Cleaning the data

Answer 2

The process of removing anomalies from a data set

Question 3

Much greater than

Answer 3

> >

Question 4

Comparing data

Answer 4

A measure of location and a measure of spread
Median and IQR (extreme values)
Mean and Standard deviation

Question 5

Histograms

Answer 5

Used for continuous data given in a grouped frequency table

Question 6

Frequency

Answer 6

Proportional to the area of the bar