Higher Apps Unit 1- Stats and Probability

What is numerical data

Can be represented by a measured amount (numbers)

What is categorical data

Can be sorted into a category rather than numbers

What is numerical discrete data

Recorded as a certain value only

What is numerical continuous data

Usually takes any value within a certain range

What does a bar chart display

Categorical data

What does a line graph display

Displays numerical data over time

What does a pie chart display

Categorical data as a proportion/percentage

What does a histogram display

The distribution of numerical data

What does a scatter graph and line of best fit display

A linear relationship between two sets of numerical data

What does a box plot display

The median, IQR and distribution for a set of data

What is a positive correlation

When both variables increase

What is a negative correlation

When one variable increases as the other decreases

What does correlation measure

The strength of a linear relationship between two variables

What does a linear regression estimate

The linear relationship between two variables