Measures of Center
Formulas
5 Number Summary
Quantitative Graphs
100

The mean of 2, 3, 5, 14.

What is 6?

100

How do you find the range of a data set?

What is max-min?

100

How many quartiles are there?

What is 3? (Q1, Q2, Q3)

100

What do the "whiskers" on the boxplot represent?

What are max and min?

200

The median of 2, 3, 5, 14.

What is 4?

200

How do you find the IQR?

What is IQR=Q3-Q1?

200

These 5 things make up the 5 number summary.

What is the minimum, Q1, median, Q3 and the maximum?

200

What can you always label the y axis on a histogram?

What is count or frequency?

300

What is the mode of this data set?
0 0 1 5 7 7 7 8 9

What is 7?

300

What is the formula for mean?

What is add all the data values and divide by the number of data values? OR xbar=(sumx)/n

300

What do you to find the median if you have an even number of values?

What is add the two middle numbers together and divide by 2 (find the mean)?

300

What is the box part of the boxplot made up of?

What are the quartiles: Q1, Q2, Q3?

400

This is used as the measure of center for data that is skewed or contains outliers.

What is the median?

400

Describe how to find Q1.

What is find the middle of the first half of ORDERED data?
400

What is the Q1 and Q3 of the following data?

5,5,6,6,7,7,8,8

What is 5.5 and 7.5?

400

How are outliers represented on a boxplot?

What are dots outside the whiskers?

500

Which measure of center is best when the data are symmetrical and has no outliers?

What is mean or average?

500

What are the formulas for Upper Fence and Lower Fence?

What is UF= Q3+1.5(IQR) and
LF= Q1-1.5(IQR) ?

500

The 5-numbersummary for the numbers 22, 22, 23, 24, 24, 25, 26, 27, 28, 29 (there are no outliers)

What is Min=22, Q1=23, Med=24.5, Q3=27, Max=29?

500

Describe fully how to find outliers from a dataset when making a boxplot.

What is finding fences, and any data values outside the fences are outliers?