Book Online Demo

Check Your IQ

Try Test

Courses

Offline Centres

Determine the mean of the observations $425, 430, 435, . . . . . . 495 .$

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

420

425

435

460

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Given, observations are

425, 430, 435, . . . . . . 495

\Rightarrow 425, 430, 435, 440, 445, 450, 455, 460, 465, 470, 475, 480, 485, 490, 495

.
Total number of observations

= 15

Sum of observation,

= 425 + 430 + 435 + 440 + 445 + 450 + 455 + 460 + 465 + 470 + 475 + 480 + 485

+ 490 + 495

= 6900

We know that,
Mean

= \frac{Sum of observations}{Total number of observations}

= \frac{6900}{15}

= 460

Hence, option

4

is correct.

Watch 3-min video & get full concept clarity

JEE

NEET

Foundation JEE

Foundation NEET

CBSE