Mean = (6+2+9+7+2+10+13)/7 = 49/7 = **7**

Median: 1) first put the data in ascending order

2, 2, 6, 7, 9, 10, 13

2) Median is the number in the middle = **7**

Mode: What appears most in the sample = **2**

Range: Min to max = **2 to 13**

Variance of sample: Sum((x-mean)^2)/(n-1) = **16.666667**

Standard Deviation = sqrt(variance) = sqrt(16.666667) =** 4.082483**

Coefficient of Variance (CV): Standard deviation/mean = **0.583212**

Unbiased Coefficient of Variance: (1 + 1/4n) * CV = **0.604041**

Z-scores: (x - mean)/standard deviation

2: Z = (2 - 7)/4.082483 = **-1.22474**

6: Z= **-0.24495**

7: Z = **0**

9: Z = **0.489898**

10: Z = **0.734847**

13: Z = **1.469694**

Honestly, you could've just Googled how to do all of these. You can easily compute this using simple tools like a calculator or Microsoft Excel. But anyway, here are your answers.