For the data $\{6, 7, 10, 12, 13, 4, 8, 12\}$, the mean is:
A$8.5$
B$10$
C$9.5$
D$9$
Answer & Solution
Correct answer: D. $9$
Sum = 6+7+10+12+13+4+8+12 = 72. There are $n = 8$ observations. Mean = 72/8 = **9**.
Related questions
Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE For [[1,2],[2,4]], the determinant equals:If A is invertible, |A^{−1}| equals:For a 3 × 3 non-singular A with |A| = 5, the value of |adj A| is:For a non-singular square matrix A of order n, |adj A| equals:For non-singular A, B of the same order, (AB)^{−1} equals:For a non-singular A, (A^{−1})^{−1} equals: