Question

The age(in years) of 20 students are as follows. Find the mean age of the following data by making a frequency table. 8, 10, 9, 12, 11, 10, 12, 8, 9, 11, 10, 12, 8, 9, 11, 12, 8, 9, 10, 12
It is urgent

Help me please

Answer 1

Answer:

10.05 is the mean of the following data.

Step-by-step explanation:

STEP 1 : Create a table in which you have to make three columns. First should be of the numbers ( from smaller to greater), second should be of frequency ( of how many times it has been repeated) and the third should be of the total ( Frequency × the number ).

The last row of the table should be for addition ( of the numbers in the column).

STEP 2 : Divide the addition of the TOTAL with the addition of FREQUENCY ( Like in this question, the addition of total was 201 and addition of frequency was 20; so the division will be 201/20).

STEP 3 : The quotient is the mean