Question

Determining Association
This activity will help you meet these educational goals:
Mathematical Practices—You will make sense of problems and solve them, reason abstractly and quantitatively, construct viable arguments and analyze the reasoning of others, use mathematics to model real-world situations, attend to precision, and look for and make use of structure.
Directions
Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write a brief evaluation of your work.

Activity
In this activity, you will examine the positive and negative associations shown by scatter plots.

Question 1
Jessica is a dancer. She wonders about the relationship between the number of glasses of water she drinks in a day and the number of hours she spends dancing. She recorded the number of glasses of water she drank and the number of hours she spent dancing for the last 10 days. She created this scatter plot from her data.

Answer 1

Part A
Does this scatter plot show a positive or a negative association?

Answer 2

Ok, so a positive association goes \(\rightarrow \uparrow\)
and negative association goes \(\downarrow \rightarrow\)

if you understand that

Answer 3

is this for part a?

Answer 4

Yes

Answer 5

ok Part B
Write a sentence that explains how the number of glasses of water Jessica drinks changes as the number of hours she spends dancing changes.

Answer 6

So the sentence format should go:

The (y value) changes as (x value) changes.
OR
The number of (y value) changes as the number of (x value) changes.

your choice of wording.

Answer 7

Question 2
Regina sets the price for an oil change at a car dealership’s service department. She wants to know if the number of service department customers changes as the price of an oil change changes. She recorded the number of service department customers and the oil change prices for the last 10 months. She created this scatter plot from her data.

Answer 8

Question-?

Answer 9

yes look up

Answer 10

there is no question included in that though.

Answer 11

Question 2
Regina sets the price for an oil change at a car dealership’s service department. She wants to know if the number of service department customers changes as the price of an oil change changes. She recorded the number of service department customers and the oil change prices for the last 10 months. She created this scatter plot from her data.

Answer 12

that question goes with that chart

Answer 13

yea, but what are we supposed to be answering if she made the chart?

Answer 14

oop sorry here you goPart A
Does this scatter plot show a positive or a negative association?

Answer 15

ok? im still a little confused

Answer 16

basically, a positive association continues going up and the negative continues going down

Answer 17

Part B
Write a sentence explaining how the number of customers changes as the oil change price changes.