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
