CK-12-Basic Probability and Statistics Concepts - A Full Course

http://www.ck12.org Chapter 5. Measures of Central Tendency

Above the 0 key is the word CATALOG, and this function acts like the yellow pages of a telephone book. When you
press

2ND

0

to access the CATALOG menu, an alphabetical list of terms appears. You can either scroll down to the word median
(this will take a long time) or press the blue÷to access all terms beginning with the letter ’m’.

Again, the median of the values in L1 is 20.

Whichever method you use, the result will be same. Using technology will save you time when you are determining
the median of a set of data values.

Example C

The following data values represent the numbers of chocolate bars sold by students during a recent fundraising
campaign. What was the median number of chocolate bars sold? Use your TI calculator to find the answer.

TABLE5.20:

Number of Bars Number of Students

11 6

12 8

13 5

14 13

15 17

16 15

When a set of data values is given in the form of afrequency table, technology is often used to determine the
median. Using the TI-83 calculator: