The average of first n natural numbers is_______________?

Related Mcqs:

1. The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is______________?

   A. 20
   B. 5
   C. 2.5
   D. 5.5
   E. 0

2. The mean of 10 numbers is 9, then sum of these numbers will be__________________?

   A. 9
   B. 0.9
   C. 70
   D 90

3. The product of first ‘n’ natural numbers is _____________?

   A. 1.2.3.4,………
   B. 1.2.3……(n-2) (n-1) (n)
   C. n. (n-1) (n-2)…………..3.2.1.0
   D. None of these

4. The average monthly production of a factory for the first 8 months is 2,500 units, and for the next 4 months the production was 1,200 units. The average monthly production of the year will be_____________?

   A. 2066.55 units
   B. 5031.10 units
   C. 4021.12 units
   D. 3012.11 units

5. The middle value of an ordered array of numbers is the____________?

   A. Mode
   B. Mean
   C. Median
   D. Mid Point

6. Which of the following describe the middle part of a group of numbers ?

   A. Measure of Variability
   B. Measure of Central Tendency
   C. Measure of Association
   D. Measure of Shape

7. Arithmetic mean of two positive numbers “X” and “Y” is_________________?

   A. ab2
   B. 2a2
   C. (a+b)/2
   D. a−b2
   E. 2a+b

8. The Harmonic Mean of any two numbers is________________?

   A. a+b2
   B. 2aba+b
   C. ab−−√
   D. a+b

9. Two digit random numbers are ________________?

   A. 2
   B. 10
   C. 99
   D. 100

10. Random numbers are used for selection of ____________?

    A. Random space
    B. Space
    C. Random sample
    D. Non of these