FREQUENCY TABLES &

HISTOGRAMS

Link Up!Number of Paper Clips

Frequency

Describing Distributions

hape

utliers enter

pread

SOCS

Mound/Symmetrical

Skewed Left

Skewed Right

Uniform

Shape

OutliersOutliers are extreme high or low values.*We will calculate them Monday!

outlier

Center• mean – add the values up and divide by number of values

• median – the middle (if two numbers share the center,

average them)

• mode– the value that appears most often (there can be

multiple or no modes)

SpreadRange = Max value – Min value

* We will discuss other measures of spread on Monday

Create a histogram using the data below.

Below is a stem and leaf plot of the amount of money spent by 25 shoppers at a grocery store.

Stem Leaf0123456789

1011

3 6 0 1 7 8 90 0 3 6 81 3 4 72 5 50 52 6

7

3 Key: 42 = $42

Quiz – Tuesday or Wednesday