# Graphs Flashcards

What is the equation for frequency density

Frequency over class width

What are 3 reasons a diagram could be misleading

Line is thick

Axis are not labelled

No title

What is the equation for frequency

Frequency density x class width

What is the equation for sizing pie charts

Do practice questions

What is a bar chart

Bars are equal width with equal spaces between them

What is a histogram

A histogram is similar to a bar chart but with no gaps between them

Why would you use a bar chart

when you are showing segments of information.

Why would you use a histogram

to summarize discrete or continuous data that are measured on an interval scale

Why would you use a stem and leaf diagram

It can be useful to find the mode median.

Why would we use a pie chart

helps organize and show data as a percentage of a whole.

What is a composite bar chart

Bars are stacked on eachother

What is a vertical line graph

Bar chart with small lines

What do you plot cumulative frequency diagrams against

The upper class of boundary

What goes on y axis of a histogram

Frequency

What goes on the y axis if the class widths are unequal for a histogram

Frequency density