6. Descriptive Statistics
6.08 Correlation and causation
Interactive practice questions
The table shows the number of fans sold at a store during days of various temperatures.
| Temperature ($^\circ$°C) | $6$6 | $8$8 | $10$10 | $12$12 | $14$14 | $16$16 | $18$18 | $20$20 |
| Number of fans sold | $12$12 | $13$13 | $14$14 | $17$17 | $18$18 | $19$19 | $21$21 | $23$23 |
a
Consider the correlation coefficient $r$r for temperature and number of fans sold. In what range will $r$r be?
$r=0$r=0
A
$r>0$r>0
B
$r<0$r<0
C
b
Is there a causal relationship?
Yes
A
No
B
Easy
< 1min
For the graph depicted, choose the correlation coefficient that best represents it.
Easy
< 1min
For the graph depicted, choose the correlation coefficient that best represents it.
Easy
< 1min
For the graph depicted, choose the correlation coefficient that best represents it.
Easy
< 1min
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