Question

The cholesterol levels of a sample of 10 female employees are given:
154 240 171 188 235 203 184 173 181 275

What is the sample mean cholesterol score of this sample?

Woman Colesterol (x) x²
1 154 23716
2 171 29241
3 173 29929
4 181 32761
5 184 33856
6 188 35344
7 203 41209
8 235 55225
9 240 57600
10 275 75625
total 2004 414506