1. **Problem:** Compute the mean, median, mode, and standard deviation for the data: 5, 8, 6, 7, 9, 10, 6, 7, 8, 7.
2. **Mean formula:**
$$\text{Mean} = \frac{\sum x_i}{n}$$
where $x_i$ are data points and $n$ is the number of data points.
3. **Calculate mean:**
$$\sum x_i = 5 + 8 + 6 + 7 + 9 + 10 + 6 + 7 + 8 + 7 = 73$$
$$n = 10$$
$$\text{Mean} = \frac{73}{10} = 7.3$$
4. **Median:** Sort data: 5, 6, 6, 7, 7, 7, 8, 8, 9, 10.
Since $n=10$ (even), median is average of 5th and 6th values:
$$\text{Median} = \frac{7 + 7}{2} = 7$$
5. **Mode:** The most frequent value(s) is 7 (appears 3 times).
6. **Standard deviation formula:**
$$s = \sqrt{\frac{1}{n-1} \sum (x_i - \bar{x})^2}$$
7. **Calculate squared deviations:**
$$(5-7.3)^2 = 5.29$$
$$(8-7.3)^2 = 0.49$$
$$(6-7.3)^2 = 1.69$$
$$(7-7.3)^2 = 0.09$$
$$(9-7.3)^2 = 2.89$$
$$(10-7.3)^2 = 7.29$$
$$(6-7.3)^2 = 1.69$$
$$(7-7.3)^2 = 0.09$$
$$(8-7.3)^2 = 0.49$$
$$(7-7.3)^2 = 0.09$$
Sum of squared deviations:
$$5.29 + 0.49 + 1.69 + 0.09 + 2.89 + 7.29 + 1.69 + 0.09 + 0.49 + 0.09 = 20.1$$
8. **Calculate standard deviation:**
$$s = \sqrt{\frac{20.1}{10-1}} = \sqrt{\frac{20.1}{9}} = \sqrt{2.2333} \approx 1.494$$
**Final answers:**
- Mean = 7.3
- Median = 7
- Mode = 7
- Standard deviation $\approx 1.494$
Descriptive Stats F2A49B
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