Central Tendency & DispersionMTP May 18Question 2886 of 473
All Questions

The mean of first 3 terms is 14 and the mean of next 2 terms is 18. The mean of 5 numbers is

Options

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

Correct Answer

✅ Option d — 15.6

All Options:

  • A14.5
  • B15
  • C14
  • 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 the overall mean of 5 numbers.** Mean=42+365=785=15.6\text{Mean} = \frac{42 + 36}{5} = \frac{78}{5} = 15.6 **Note:** The computed answer is 15.6 (Option D), not 14.5 (Option A). Let us recheck: 42+36=78\displaystyle 42+36=78, 78/5=15.6\displaystyle 78/5=15.6. 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