MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Direct Method

∑fx = 5x + 2,...

Question

$\sum$ fx = 5x + 2, $\sum$ f = 12. If the mean of the distribution is 6, what is the value of x?

A

12

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

14

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

15

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

18

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
14

We know Mean = $\frac{\sum f x}{\sum f}$

Hence, $\frac{5 x + 2}{12}$ = 6

$\Rightarrow$ 5x + 2 = 12 $\times$ 6
$\Rightarrow$ 5x = 72 – 2 = 70
$\Rightarrow$ x = 14

Suggest Corrections

thumbs-up

0

Similar questions

$\sum$ fx = 5x + 2, $\sum$ f = 12. If the mean of the distribution is 6, what is the value of x?

For a distribution,
$\sum F X = 5 x + 2, \sum F = 12$

If the mean of the distribution is 6, what is the value of x?

$\sum$ fx = 5x + 2, $\sum$ f = 12. If the mean of the distribution is 6, then the value of x is less than

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Direct Method

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Standard X Mathematics

Join BYJU'S Learning Program

CrossIcon