# Graphs Flashcards

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1
Q

What is the equation for frequency density

A

Frequency over class width

2
Q

What are 3 reasons a diagram could be misleading

A

Line is thick
Axis are not labelled
No title

3
Q

What is the equation for frequency

A

Frequency density x class width

4
Q

What is the equation for sizing pie charts

A

Do practice questions

5
Q

What is a bar chart

A

Bars are equal width with equal spaces between them

6
Q

What is a histogram

A

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

7
Q

Why would you use a bar chart

A

when you are showing segments of information.

8
Q

Why would you use a histogram

A

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

9
Q

Why would you use a stem and leaf diagram

A

It can be useful to find the mode median.

10
Q

Why would we use a pie chart

A

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

11
Q

What is a composite bar chart

A

Bars are stacked on eachother

12
Q

What is a vertical line graph

A

Bar chart with small lines

13
Q

What do you plot cumulative frequency diagrams against

A

The upper class of boundary

14
Q

What goes on y axis of a histogram

A

Frequency

15
Q

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

A

Frequency density