산점도와 이원 도수분포표 단원 종합

O.1Describe each association: positive linear, negative linear, nonlinear, or no association.

1. 1
   Association: 
2. 2
   Association: 
3. 3
   Association: 
4. 4
   Association: 

O.2Use the line of best fit to answer each question.

1. 5
   The line of best fit for days of training ($x$) and push-ups done ($y$) is $y=1.3x+16$. Predict $y$ when $x=13$.

O.2Use the line of best fit to answer each question. (continued)

1. 6
   The line of best fit for hours studied ($x$) and test score ($y$) is $y=1.9x+36$. Predict $y$ when $x=13$.
2. 7
   The line of best fit for weeks ($x$) and plant height (cm) ($y$) is $y=3.3x+18$. Predict $y$ when $x=17$.

O.3Use the two-way table to answer each question.

1. 8

   	Passed	Did not pass	Total
   Morning class	13	13	26
   Evening class	9	20	29
   Total	22	33	55

   What percent of the students in the morning class passed?
2. 9

   	Soccer	Basketball	Total
   7th grade	18	7	25
   8th grade	39	25	64
   Total	57	32	89

   What percent of the 7th graders chose soccer?

O.3Use the two-way table to answer each question. (continued)

1. 10

   	Soccer	Basketball	Total
   7th grade	35	9	44
   8th grade	36	9	45
   Total	71	18	89

   What percent of the 8th graders chose basketball?

O.1Describe Scatter Plots

1. 1positive linear
2. 2no association
3. 3negative linear
4. 4no association

O.2Predict with Lines of Best Fit

1. 5$32.9$
2. 6$60.7$
3. 7$74.1$

O.3Two-Way Frequency Tables

1. 8$50\%$
2. 9$72\%$
3. 10$20\%$