Chapter 4 review

Vocab

100

What is a Relative Frequency table

Shows the ratio (percentage) of the number of data in each category to the total number of data items.

200

What is categorical data?

 Data that falls into categories

300

What is positive association? 

The y-values tend to increase as the x-values increase.

400

What is a scatter plot?

Graph in the coordinate plane that shows the relationship between two sets of data

500

what is trend line?

A straight line drawn on a scatter plot that shows the general direction or pattern of the data points

Frequency Tables

100

^{Question 5 on the Study Guide}

yes men- 54.5% 

yes women- 55.5%

total yes - 55%

no men - 45.5%

no women - 44.4%

total no- 45%

200

Question 11 on the study guide

B & C

300

_{Question 3 on worksheet "Constructing Two-Way Relative Frequency Tables" (the one with no butterfly)}

Show me everyone's worksheet 

400

Question 6 from the worksheet "Constructing Two-Way Frequency Tables" (The one with the butterfly)

Everyone in the group show me your worksheet. 

500

Question 1 from the worksheet: "Interpreting Two-Way Frequency Tables" (the tent one)

a. sports drinks

b. she prefers hiking, 22>11

c. that is false because out of the total of 49 people who like to kayak on 11 like water. 

Linear associations

100

Question 1 from the study guide

positive

negative

no association 

200

Question 3 from the study guide

A. POSITIVE association 

300

Question 4 from the study guide

D. Weak Negative

400

Question 10 from the study guide. 

B. 

500

Question 9 from the study guide 

A. the data has a linear association 

D. The data has a negative association

F. The data has no outliers

equation of a scatter plot

100

Question 6 from the study guide

a. 1 million in total profit every 2 years. 0.5 = 1/2. 

b. 4 millions of total profit at the start of 2000. 

200

Question 7 from the study guide

slope= 5/6

y-intercept= 55

equation= y= 5/6x + 55

300

Question 3 from the worksheet "Scatter plot, Correlation, and Line of Best Fit Exam."

A. 

400

Question 4 from the worksheet "Scatter plot, Correlation, and Line of Best Fit Exam"

D.

500

Question 20 on the worksheet "Scatter plot, Correlation, and Line of Best Fit Exam"

hint: pick two points from the table (Look at your x-values, the smallest X is always your X1) 

y=12.5x +55