Posted by **kamelia** on Saturday, January 8, 2011 at 4:11pm.

For problems 12 to 14, do the following: (a) Make a scatter diagram of the

scores; (b) describe in words the general pattern of correlation, if any; (c) figure

the correlation coefficient; (d) figure whether the correlation is statistically significant

(use the .05 significance level, two-tailed); (e) explain the logic of what

you have done, writing as if you are speaking to someone who has never heard

of correlation (but who does understand the mean, deviation scores, and hypothesis

testing); and (f) give three logically possible directions of causality, indicating

for each direction whether it is a reasonable explanation for the correlation

in light of the variables involved (and why).

12. Four research participants take a test of manual dexterity (high scores mean better dexterity)

and an anxiety test (high scores mean more anxiety). The scores are as follows.

(c)

(e)

(d)

(f)

Person Dexterity Anxiety

1 1 10

2 1 8

3 2 4

4 4 -2

13. Four

## Answer This Question

## Related Questions

- statistics in psychology - 11. Make up a scatter diagram with 10 dots for each ...
- statistics - For problems 12 to 14, do the following: (a) Make a scatter diagram...
- statistics - Given the following scatter diagram , the sample correlation ...
- Psychology - Four research participants take a test of manual dexterity (high ...
- statistics - 14. Evolutionary theories often emphasize that humans have adapted ...
- Statistics - For the following set of scores: X Y 6 4 3 1 5 0 6 7 4 2 6 4 a) ...
- Psychology Statistics - 2 For a sample of n = 20 individuals, how large a ...
- math - Construct a scatter plot for the given data. Determine whether there is a...
- math - I need a definition for this constant rate of change when graphing in ...
- Statistics - c) There is a correlation between studentsâ€™ levels of anxiety and ...

More Related Questions