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