Question

The table lists the results from a survey (of questionable accuracy) of adults and how much they spend on a night out. The table displays the values rounded to the nearest whole number. Make a scatter plot. How would you describe the correlation between a person’s age and how much he or she spends on a night out?

Answer 1

First of all Welcome To Open Study

Answer 2

To graph a table using x, y coordinates you can use the function called fit linear on wolframalpha.
Here is an example:
fit linear {22, 58}, {20, 53}, {24, 48}, {30, 46}
Link:
https://www.wolframalpha.com/input/?i=fit+linear+%7B22%2C+58%7D%2C+%7B20%2C+53%7D%2C+%7B24%2C+48%7D%2C+%7B30%2C+46%7D

Answer 3

fit linear {22, 58}, {20, 53}, {24, 48}, {30, 46}, {35, 43}, {38, 38}, {42, 41}, {45, 38}

Answer 4

Okay great.
Go here: https://www.wolframalpha.com/input/?i=fit+linear+%7B22%2C+58%7D%2C+%7B20%2C+53%7D%2C+%7B24%2C+48%7D%2C+%7B30%2C+46%7D%2C+%7B35%2C+43%7D%2C+%7B38%2C+38%7D%2C+%7B42%2C+41%7D%2C+%7B45%2C+38%7D

Do you see the graph?

Answer 5

Yeah

Answer 6

The blue line is call the best fit line, when you normally graph this without a calculator you try to get the same amount of points on either side.

Answer 7

Ok?

Answer 8

Well which one of your graphs looks like the graph produced by wolframalpha?

Answer 9

Graph 2

Answer 10

Correct!

Answer 11

Thank you!!!!!!!

Answer 12

No problem, glad I could help.