Question

$\huge \fbox \red{❥ Question}$



While checking the value of 20 observations, it was noted that 125 was wrongly noted as 25 while calculating the mean and then the mean was 60. Find the correct mean.





(REQUIRED QUALITY ANSWER)​

Answer 1

Step-by-step explanation:

Hey mate ,

This is your answer ,

Let y be the sum of observation of 19 (20 - 1) numbers leaving 125,So, y + 25 = 20 * 60 = 1200(Mean = sum of observations/ no. of observations)As we know

➠ x + 25 = 20 × 60 = 1200 Also

➠ x + 125 =20 × y = 20yNext, Subtract 125 - 25 = 20y - 1200

➠ 20y = 1300

➠ y = 65

Thank you ,

Have a great time ahead