Question

This is a long shot but I need help if anyone here can help

budget(x) 63,87,49,31,193,96,91
gross(y) 61,68,45,62,536,142,48

budget (x) =63,87,49,31,193,96,91=610
gross(y)= 61,68,45,62,536,142,48=962
x*y= 3843,5916,2205,1922,103448,13632,4368=130966
x^2= 3962,7569,2401,961,37249,9216,8281=70608
y^2= 3721,4624,2025,3844,287296,20164,2304=323978

i will show what i have so far

Answer 1

numerator of r=(130966)-(610)(962)/7= 47134.571428
denominator of r= SQRT [7068-(610)^2/7]*SQRT[323978(962)^2/7]
=Sqrt[17450.857142]
=Sqrt[191771.714285]
r=17450.857142
now I am stuck

Answer 2

there is a question i will post

Answer 3

brb

Answer 4

Listed below are the budgets (in millions of dollars and the gross receipts (in millions of dollars) for randomly selected movies construct a scatterplot find the value of the linear correlation coefficient r and find the P value using a=0.05 is there sufficient evidence to conclude that there is a linear correlation between budgets and gross receipts do the results change if the actual budgets listed are $63,000.000, $87,000.000, 49,000.000 and so on

Answer 5

r is wrong

Answer 6

Ugh I hated statistics a few assignments back >_< let me try something, this is the formula I had to use to find R (Correlation Coefficient)

Answer 7

I plugged in your x and y values and got this

Answer 8

And this is what your residual plot should look like if you're going to use one,

Answer 9

r = ? / [ ? ] * [ ? ] this was the next step what do i put here
i think the second number is [132.10169 and the second number is [437.91747]

Answer 10

I used a program that calculates it for you. The formula itself is quite cumbersome if you mess up on just one number -- happened to me. You can try to do it by hand:

n = Number of values or elements
x = First variable
y = Second variable
Σxy = Sum of the product of first and second variables
Σx = Sum of first variable
Σy = Sum of second variable
Σx^2 = Sum of the square of the first variable
Σy^2 = Sum of the square of the second variable

So simply first find the values and plug in into the formula. Simplifying isn't that hard part, though finding them is somewhat difficult >_<

Answer 11

what is the test statistic t

Answer 12

what?

Answer 13

that is what is i asking for the test statistic t round to three decimal places as needed this is the first i have seen this

Answer 14

So have I, yeah I've never been taught that lol, I don't want to misguide you o.o

Answer 15

i found a website i typed it in and it gave it to me

Answer 16

ah ok, nice :p

Answer 17

where did you get the program you used

Answer 18

My school advised to use it, its called geogebra. http://www.geogebra.org/cms/en/

It takes a while to get used to

Answer 19

thanks i can use all the help i can get and thanks for your help

Answer 20

Yw :P