Question

Mean if the data set is 15. Every number in the set is multiplied by 2, then 6 is added to all the numbers, then every number is divided by 2, then 6 is subtracted from all the numbers. Find the mean of the new data set

Answer 1

Answer:

The mean is the average of the data set. To find it, you add all the numbers together and divide the total by the number of items in the set. The mode is simply the number that occurs most frequently in a data set that contains repeated numbers.

Answer 2

ANSWER

ANSWERLet number of terms in data be n

ANSWERLet number of terms in data be nGiven that,

ANSWERLet number of terms in data be nGiven that, Mean =p

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pn

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pnIf each term is multiplied by 3, new sum becomes thrice, i.e. 3pn

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pnIf each term is multiplied by 3, new sum becomes thrice, i.e. 3pnAlso given that 1 is added in each term, hence, n is added in sum, i.e. New sum =3pn+n

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pnIf each term is multiplied by 3, new sum becomes thrice, i.e. 3pnAlso given that 1 is added in each term, hence, n is added in sum, i.e. New sum =3pn+nMean of new observations =

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pnIf each term is multiplied by 3, new sum becomes thrice, i.e. 3pnAlso given that 1 is added in each term, hence, n is added in sum, i.e. New sum =3pn+nMean of new observations = n

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pnIf each term is multiplied by 3, new sum becomes thrice, i.e. 3pnAlso given that 1 is added in each term, hence, n is added in sum, i.e. New sum =3pn+nMean of new observations = n3pn+n

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pnIf each term is multiplied by 3, new sum becomes thrice, i.e. 3pnAlso given that 1 is added in each term, hence, n is added in sum, i.e. New sum =3pn+nMean of new observations = n3pn+n

ANSWERLet number of terms in data be nGiven that, Mean =p⇒ Sum of data =pnIf each term is multiplied by 3, new sum becomes thrice, i.e. 3pnAlso given that 1 is added in each term, hence, n is added in sum, i.e. New sum =3pn+nMean of new observations = n3pn+n =3p+1

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