Day 5 ­ Mean, Median, Mode and Range.notebook

1

April 29, 2013

AIM

Thursday April 25, 2013 - Day 2AIM

SWBAT find measures of central tendency and range of a data

DO NOWRead top of Notes Sheet

#1 and #2 on Notes

HWJanuary 2011 Regents # 16,38,39

June 2011 #1,3,4,5,7,10-13

Day 5 ­ Mean, Median, Mode and Range.notebook

2

April 29, 2013

Apr 26­9:43 AM

Day 5 ­ Mean, Median, Mode and Range.notebook

3

April 29, 2013

Day 5 ­ Mean, Median, Mode and Range.notebook

4

April 29, 2013

Notes/CW

mean: 62 median: 61.5 mode: 62 range: 13

mean:231 median: 231 mode: no mode

range: 18

He needs to earn a grade of 100 to receive a 90 average.

Day 5 ­ Mean, Median, Mode and Range.notebook

5

April 29, 2013

CW Cont'd

outliers in data affect mean so use this when there are not any outliers and there is a small range.

use the median because there is a large range, and outliers (age 6 and age 80)

outliers do not affect median, therefore use this when you have outliers and a small range.

use the mean because the range is small and there are not any outliers

use mode because you are looking for the item that was preferred MOST

median = 23

mean = $20.80

mode = 27 (Cinnamon Toast Crunch)