alleryThe mean of $n$ observations $x_1, x_2, \ldots, x_n$ is:
A$\sqrt{\sum x_i}$
B$\sum x_i$
C$\dfrac{n}{\sum x_i}$
D$\dfrac{1}{n} \sum x_i$
Answer & Solution
Correct answer: D. $\dfrac{1}{n} \sum x_i$
Mean $\bar{x} = \dfrac{1}{n} \sum_{i=1}^{n} x_i$.
Keep practising Geometry: Circles
Browse all Geometry: Circles questions for GRE, or explore more Mathematics topics.
Related questions
A die is rolled. What is the probability of getting a number GREATER THAN 6?As per your syllabus, what is the area of an EQUILATERAL triangle with side a?As per your syllabus, an equilateral triangle with side a has its height equal to which exEvents $A$ and $B$ are mutually exclusive with $P(A) = 0.4$ and $P(B) = 0.3$. Find $P(A \cBatsman A scored 30, 91, 0, 64, 42, 80, 30, 5, 117, 71. What is the range of his scores?Range of a data set is defined as:Which of the following is NOT a measure of central tendency?A die is thrown once. What is the probability of getting a number greater than 4?