1. “Point-Slope Form Review”
Take out a sheet of paper and label the top
“Point-Slope Form Review”
EOCT REVIEW DAY 2

2. Unit 8 – Statistics Categorical Data & Frequency Tables
Bivariate Data
Unit 8 – Statistics
Categorical Data & Frequency Tables

3. So far, this is all we’ve done
Categorical
Eye Color
Grade in school
Number of siblings
Gender
Ethnicity
Quantitative
Age
Height
Weight
Test Scores
So far, this is all we’ve done
Two Types of Data

4. Two-Way Frequency Chart
Shows how 2 categories relate to each other
The number in the cell tells us the frequency
How many females take Latin?
School
Club
Gender
Male
Female
Totals
Band 12 21 33
Chorus 15 17 32
Chess 16 3 19
Latin 7 9
Yearbook 28 35 78 57
135 9
Two-Way Frequency Chart

5. Use the cell total divided by the table total
Use the cell total divided by the table total. Find the probability of selecting a…
Female chorus student.
Male band member.
Female chess player.
School
Club
Gender
Male
Female
Totals
Band 12 21 33
Chorus 15 17 32
Chess 16 3 19
Latin 7 9
Yearbook 28 35 78 57
135
17/135
12/135
3/135
Joint Frequencies

6. Notice, these all only deal with ONE category!
Use the column/row total. divided by the table total. Find the probability of selecting a…
Band member.
Male student.
Yearbook member.
Notice, these all only deal with ONE category!
School
Club
Gender
Male
Female
Totals
Band 12 21 33
Chorus 15 17 32
Chess 16 3 19
Latin 7 9
Yearbook 28 35 78 57
135
33/135
78/135
35/135
Marginal Frequencies

7. Conditional Frequencies
Use the cell total divided by the row/column total. Find the probability of selecting a…
Female student if we know she is in chorus.
Male, given he plays chess.
Male student, given he is in the band.
School
Club
Gender
Male
Female
Totals
Band 12 21 33
Chorus 15 17 32
Chess 16 3 19
Latin 7 9
Yearbook 28 35 78 57
135
17/32
16/19
Condition – tells us what our denominator will be
12/33
Conditional Frequencies

8. Handout!
We’ll be in trailer 14
on Monday!
CLASSWORK