Question

Scatter plots are graphs of data points used to determine if there is a relationship between sets of data. These are relations that have meaning.

Here is a table showing data about annual rainfall (x) and the weight of pumpkin ( y).

Rainfall inches (x)
43
35
38
42
30
29
44
40
41
Pumpkin weight lbs (y)
204
195
198
200
190
190
206
202
200

1. Express this relation as a list of ordered pairs.

2. What is the domain?

3. What is the range?

4. Print out a piece of graph paper then graph the relation. Describe the relationship between annual rainfall and the weight

Answer 1

I need help graphing them out aswell?

Answer 2

the ordered pairs are
(43, 204)
(35, 195)
(38, 198)
(42, 200)
(30, 190)
(29, 190)
(44, 206)
(40, 202)
(41, 200)

Answer 3

Thank you for that :)

Answer 4

domain = first element of each ordered pair e.g
43
35
38
42
30
29
44
40
41
are the domain of each ordered pair

Answer 5

range = second element of each ordered pair e.g
204
195
198
200
190
190
206
202
200
are the range of each ordered pair

Answer 6

Thank you! :) Do you know about the last one?

Answer 7

yes i know i m trying to use matlab or mathimatica to plot the points cuz its a little difficult to plot it by hands

Answer 8

Okay!

Answer 9

here you go
http://www.wolframalpha.com/input/?i=plot+%7B29%2C+190%7D%7B30%2C+190%7D%7B35%2C+195%7D%7B38%2C+198%7D%7B40%2C+202%7D%7B41%2C+200%7D%7B42%2C+200%7D%7B43%2C+204%7D%7B44%2C+206%7D+

Answer 10

Thank you so much! You are so helpful! Do you know the relationship between annual rainfall and the weight of the pumpkins?

Answer 11

form the graph we can see that there is no regularity. sometimes the the graph goes upward but sometimes downwards. so it is difficult to say that there is a specific relationship between the annual rainfall and the weight of the pumpkins

Answer 12

Okay thats good! Thanks again! :D

Answer 13

you are most welcome