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Please indicate if the two variables will be positive (+), negative (-), or zero:

 

a.       size of house and size of electric bill

b.      height of parents and height of children

c.        air humidity level and people’s energy level

d.      number of books read per year and age at which got first eyeglasses

e.       hours spent at the beach and depth of tan

Jun 19th, 2015

Thank you for the opportunity to help you with your question!

a. size of house and size of electric bill Positive The bigger the house, the bigger the electric bill

b. height of parents and height of children Positive The bigger the parents , the bigger the children

c. air humidity level and people’s energy level Negative – if it is very humid, you can't sweat and so are less likely to be active

d. number of books read per year and age at which got first eyeglasses

Negative The more books read, the younger the age to get glasses

e. hours spent at the beach and depth of tan  Positive The more hours spent at the beach, the deeper the tan.


Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 19th, 2015

Here are hypothetical data for a study of the relationship between intelligence and prejudice in adults. For both variables, higher scores indicate more of the measured trait:

Participants     Intelligence   Prejudice

A                       102                    22

B                    128                    18

C                     117                 26

D                 126                     20

E                     92                  30

F                    121              19

G                  96                  26

H                 104                23

I                112                  22

J              92                     28

K        101                        25

L        108                       25

c.  State the null hypothesis.

d.  Calculate Pearson r.

e.  Interpret the correlation coefficient for a two-tailed test: Can you reject the null hypothesis? If so, with what confidence?

f.  Write the result in APA journal format.


Jun 19th, 2015

I can give you the formula to use using excel

Find sum of X* Y

Divide by square root of (sum of X squares * sum of X squares)

Jun 19th, 2015

I can give you the formula to use using excel

Find sum of X* Y

Divide by square root of (sum of X squares * sum of Y squares)

X -intelligence Y -prejudice



Jun 19th, 2015

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Jun 19th, 2015
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