Statistics Chapter 2

A stem and leaf plot gives you the first digits of an answer followed by a separated digit.

A time series graph collects quantitative data over a period of time.

A bar graphs displays data with categorical labels.

A pareto chart is a bar graph with descending order of height.

A pie chart displays data in a partitioned circle.

A histogram is a bar graph with bars of equal width.

The width formula is (max-min)/(amount).

Lower limits are the lower boundaries of a range.

Upper limits are the upper boundaries of a range.

A midpoint lies in the middle of a range.

Width is the difference between consecutive lower limits.

The mean of a data set is the total divided by amount.

The median of a data set is in the middle; if a tie, average the medians.

The mode of a data set is the number that occurs the most.

The midrange of a data set is the average of the maximum and minimum.

A frequency table shows how common lying in a width is.

In a relative frequency table, a percentage replaces a literal amount.

In a cumulative frequency table, all previous ranges are accounted for.