If the mean of the following frequency distribution is 5, then b = xi    :      3           5            7            4fi    :    2             a            5             b 

If the mean of the following frequency distribution is 5, then b = 

xi    :      3          5            7            4fi    :    2             a            5             b
 

  1. A

    10

  2. B

    6

  3. C

    8

  4. D

    none of these

    Register to Get Free Mock Test and Study Material

    +91

    Verify OTP Code (required)

    I agree to the terms and conditions and privacy policy.

    Solution:

    We have,

    3×2+5×a+7×5+4×b2+a+5+b=5 5a+4b+41=35+5a+5bb=6

    Chat on WhatsApp Call Infinity Learn

      Register to Get Free Mock Test and Study Material

      +91

      Verify OTP Code (required)

      I agree to the terms and conditions and privacy policy.