Chapter 3 - Representations of Data

Question 1

What is ‘cleaning the data’:

Answer 1

Removing anomalies/outliers

Question 2

What is the formula for the area of the bar in a histogram:

Answer 2

area=k*frequency

Question 3

What is the formula for frequency density:

Answer 3

frequency density=frequency/class width

Question 4

How to compare location:

Answer 4

Compare the median and the IQR

Question 5

How to compare spread:

Answer 5

Compare the mean and standard deviation