Capricorns crash through
For these questions use the article and the data set below.
AAMI Data Set: Policy holders and percentage accident
rate by Star Sign
| |
Males |
Females |
|
Star Sign |
Policy Holders |
Accident Rate |
Policy Holders |
Accident Rate |
| Aquarius |
35,666 |
14.33 |
22,067 |
14.69 |
| Aries |
37,926 |
13.93 |
22,959 |
15.13 |
| Cancer |
38,126 |
13.78 |
23,329 |
14.67 |
| Capricorn |
54,906 |
14.82 |
33,720 |
15.37 |
| Gemini |
37,179 |
14.02 |
22,587 |
14.57 |
| Leo |
37,354 |
13.91 |
22,747 |
15.00 |
| Libra |
37,910 |
14.04 |
22,755 |
14.58 |
| Pisces |
36,677 |
13.90 |
21,967 |
14.95 |
| Sagittarius |
34,175 |
13.70 |
20,928 |
14.73 |
| Scorpio |
35,352 |
14.34 |
21,407 |
14.95 |
| Taurus |
37,179 |
14.32 |
22,715 |
14.85 |
| Virgo |
37,718 |
13.70 |
23,133 |
14.41 |
- Are the numbers of clients in each astrological sign nearly
uniform across the year? (You can test this with a Chi-square
test of goodness of fit to a uniform distribution).
- Why do you think there is a higher than expected representation
in Capricorn?
- Is the proportion of accidents under Capricorn significantly
greater than the other signs? (This can be tested with a test
of equal p-values)
- What do you think of the astrologer's explanation of the
results? Can you think of another explanation?
Where to next?
Newspaper article
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Index - Inference
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