Stats Unit 2

In a bar chart, one axis, usually the x-axis, displays the categories and the y-axis displays

frequencies

The sum of the relative frequencies in pie chart add to what percentage?

100

The following pie shows the weight of steak served in their sirloin steak dinners at local restaurants. Which weight is served the most?

4.1 to 6 oz

This graph is appropriate to use for classification of statistics students because:

All of the above

The y-axis on a graph is often truncated or starts at a number higher than 0, because:

they wanted to sway the reader

Pie charts are best used with which type of data

Category

True or False: A pie would be a good graph to show cell phone usage for the last three years

False

True or False: It is rare to see graphs that are inaccurate or misleading in the media. With modern technology it is easy to make a good graph.

False

True or false: it is ok to cherry-pick which data you want the reader to see

False

The wedges of a pie chart are usually:

Proportional to the size of the frequency of the value

A pie is a good choice to show relative frequencies.

True

True or False: A pie would be a good graph to show how members of the PTA voted on whether to hold a senior dance this year.

True

True or False: Graphs can be made to sway interpretation

True

True or False: One method of making inaccurate graphs is to change the scale of the axis

True

True or False: The shape of a frequency graph and a relative frequency graph are the same. @TypeMulti

True

True or False: When a vertical axis is manipulated in a bar graph, the y-axis is truncated:

True

Pie charts are good choices when:

You want to show parts of a whole

A college instructor polled his class on when they wanted to take the final exam. 51% said Friday, and 45% said Saturday. What is the best way to graph this data?

a pie chart but adding a third category of "no response"

A researcher wants to graph his favorite pet data: dogs 31%, cats 40%, both cats and dogs 50%. He wants to use a pie chart so he can color code the percentages by animal. What type of graph should he use that will not mislead the reader?

bar

In a bar chart, which is true

the heights of the bars should be proportional to the relative frequency