Quick Start Expectations1. Pick up HWRS #31, Warm-Up and LS Kit. Then

Fill in planner and HWRS: HW: SP p. 22, #8 a-b 2. Get a signature on HWRS3. LF turn in all HWRS for the table.4. On desk: calculator, journal, LS kit, Toolkit5. Definitions (record on Toolkit):Numerical Data: Data which involves counting or measuring. (Numbers)

Categorical Data: Information sorted into categories or groups. (favorite movies, eye colors, birth months, etc.)

Frequency: The number of times a specific data value occurs in a data set. (7,7,3,4,5,2: the frequency of 7’s in this set is “2.” The frequency of 4 is “1.”)

How many data values are within one MAD of the mean? (above or below)Write this number as a percent =How many data values are within two MADs of the mean? (above or below)Write this number as a percent =

10.6 to 14.26 = 16 values/30 values53.3%

96.6%8.77 to 16.09= 29values/ 30 values

Warm Up

p. 13

p. 14

Now create a bar graph of the class data

Math Class_____ respondents

Now create a bar graph of the class data

Math Class_____ respondents

The mode can be used to describe these results because it is a measure of center for categorical (nominal) data.

Question One:First seating choice?Last seating choice?Online vs. 7th graders vs. class?

Question Two:Strongest preference?Least important?Online vs. 7th graders vs. class?

Most people surveyed like to ride at the front, although 7th graders like to ride the middle almost as much as the front.

Most people like speed when they ride a coaster.

- Summaries are helpful in order to make general conclusions about the data, although these are just samples.

About 200 people would prefer to sit in front.Votes from the web = about 59%Votes from the 7th graders = about 43%This averages to about 50%.