Question

Arithmetic mean of 7 observations was found to be 32 if one more number observations 42 was to be add to the data what would be the new mean of the data​

Answer 1

Answer:

33.25

Step-by-step explanation:

we know that mean = ( sum of all observations ) / ( total number of observations )

initial mean ( consider this as x ) = 32 and initial number of observations ( consider this as y )  = 7

=>  ( sum of 7 observations ) / x = y

=> sum of 7 observations = x * y

= 32 * 7

= 224

so initial sum of 7 observations is 224

but one more observation 42 is added to initial sum of observations

so number of observations becomes 8 and sum of observations becomes 224 + 42  266

new mean = 266 / 8 = 33.25

plss mark brainliest