Question

The table below shows the age of some participants in a quiz competition, and the number of questions they could answer correctly:

Age (years) (x)


15


21


17


22


16


19


18

Number of questions they could answer (y)


17


17


17


17


17


17


17


What is the correlation coefficient for the data, and what does it represent?

0; it represents no correlation between x and y 1; it represents a linear positive correlation between x and y -1; it represents a linear negative correlation between x and y 1; it represents

Answer 1

@Ilovecake

Answer 2

Oh man this is a hard one. Sorry I don't know how to do this.

Answer 3

can you maybe help me with a different question?

Answer 4

@Ilovecake

Answer 5

help me here @chrisk123

Answer 6

ok

Answer 7

help with the question i posted? lol @chrisk123

Answer 8

or i have more

Answer 9

http://orange.flvs.net/webdav/assessment_images/educator_algebra1_v17/06_11_part1/06_11_20.jpg

Based on the histogram, which statement is correct about the shape of the histogram?

It is a bell curve with a longer tail on the right because of the presence of more number of days with higher temperatures than with lower temperatures.

It is a bell curve with a longer tail on the right because of the presence of more number of days with lower temperatures than with higher temperatures.

It is a bell curve with a longer tail on the left because of the presence of more number of days with lower temperatures than with higher temperatures.

It is a bell curve with a longer tail on the left because of the presence of more number of days with higher temperatures than with lower temperatures.

Answer 10

im stuck i have not gotten to this yet

Answer 11

A scatter plot is made to model the number of tickets sold at an amusement park in different number of days. The data used for the scatter plot is shown in the table below:

Days


5


3


8


6


1


4

Number of tickets sold


325


225


475


375


125


275


What does the slope of the model represent?

The price of each ticket sold The original number of tickets sold The number of tickets sold per day The number of tickets sold on the first day

Answer 12

@chrisk123

Answer 13

http://openstudy.com/study#/updates/53ec63a6e4b0f30a87d430e7 for the second one