fish length/cm |
|
22 |
26 |
27 |
28 |
24 |
24 |
24 |
29 |
30 |
31 |
26 |
27 |
21 |
27 |
29 |
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29 |
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|
25 |
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27 |
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23 |
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30 |
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Ratio |
1. What is the level of measurement? |
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|
20 |
2. Find the sample size n. |
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|
21 |
3. Find the minimum. |
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31 |
4. Find the maximum. |
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|
10 |
5. Find the range. |
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|
27 |
6. Find the mode. |
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|
27 |
7. Find the median. |
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26.45 |
8. Find the sample mean x. |
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|
26 |
9. Find the midrange. |
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2.82 |
10. Find the sample standard deviation sx. |
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0.11 |
11. Find the sample coefficient of variation CV. |
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|
2 |
12. five bins, what is the width of a single bin? |
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13. Determine the frequency and calculate the relative frequency |
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Bin upper limits |
Frequency F |
Relative Frequency |
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23 |
3 |
0.15 |
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25 |
4 |
0.2 |
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27 |
6 |
0.3 |
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29 |
4 |
0.2 |
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31 |
3 |
0.15 |
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Sums: |
20 |
1 |
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14. Sketch a frequency histogram of the data, |
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Symmetric |
15. What is the shape of the histogram? |
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1.97 |
16. z = z-score for a Cephalopholis argus that is 32 cm long. |
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Ordinary |
17. ordinary length or an unusual length for this fish in the markets of Pohnpei? |
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18. What does this suggest about the condition of this fishery? |
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