Central Tendency & DispersionMTP June 22Question 2909 of 473
All Questions

The mean of first three terms is 14\displaystyle 14 and mean of next two terms is 18\displaystyle 18. The mean of all five terms is

Options

A14
B15
C14.5
D15.6
For any discrepancies in this question, email contact@cadada.in

Correct Answer

✅ Option d — 15.6

All Options:

  • A14
  • B15
  • C14.5
  • D15.6

Detailed Solution & Explanation

**Step 1: Compute sum of first 3 terms.** Sum1=3×14=42\text{Sum}_1 = 3 \times 14 = 42 **Step 2: Compute sum of next 2 terms.** Sum2=2×18=36\text{Sum}_2 = 2 \times 18 = 36 **Step 3: Compute overall mean.** Mean=42+365=785=15.6\text{Mean} = \frac{42 + 36}{5} = \frac{78}{5} = 15.6 **Note:** The computed mean is **15.6** (Option D), not 14.5 (Option C). The correct answer is 15.6. Hence, **Option D** is the correct answer.

More Questions from Central Tendency & Dispersion

If the range of 28,22,40,20,15,50\displaystyle 28, 22, 40, 20, 15, 50 is

If the S.D. of the 1st\displaystyle 1^{st} n\displaystyle n natural numbers is 30\displaystyle \sqrt{30} then the value of n\displaystyle n is

If the variance of 5,7,9\displaystyle 5, 7, 9 and 11\displaystyle 11 is 4\displaystyle 4, then the coefficient of variation is:

A helicopter flies from A to B at the rate of 500 km/hr. and comes back at the rate 700 km/hr. The average speed of the helicopter is

If Arithmetic Mean (A.M.) and Geometric Mean (G.M.) of two numbers are 6.50 and 6 respectively, then the two numbers are

Which of the following is not a method of dispersion?

Ready to Master Central Tendency & Dispersion?

Practice all 473 questions with instant feedback, earn XP, track your streaks, and ace your CA Foundation exam.

Start Practicing — It's Free