Community mocks

Clavis TMUA Set A Paper 1 · Q17

Paper 1Statistics

A set of 1212 numbers has mean 77.

The two numbers 44 and 1010 are removed from the set and replaced by two numbers, each equal to kk.

The mean of the new set of 1212 numbers is 88.

Find the value of kk.

A1010
B1111
C1212
D1313
E1414

Read the questions freely. Sign in to check your answer, see the worked solution and save your progress.