Question

1.1 Find the mean median and mode of the given data values. a) 2; 1;7; 4;4; 8 ;4; 4; 7; 7 b) 4; 5; 5; 7; 7; 1;5; 5;1​

Answer 1

Explanation:

a) 2; 1; 7; 4; 4; 8; 4; 4; 7; 7

Arrange the series of numbers:

1; 2; 4; 4; 4; 4; 7; 7; 7; 8

`\displaystyle\\The\ mean\ is: \\\\ (1+2+4*4+7*3+8)/(10)=\\\\(48)/(10) =\\\\4.8\\\\The\ median\ is:\\\\(4+4)/(2)= \\\\(8)/(2) \\\\4\\\\The\ mode\ is:\\\\4`

b) 4; 5; 5; 7; 7; 1; 5; 5; 1

Arrange the series of numbers:

1; 1; 4; 5; 5; 5; 5; 7; 7

`\displaystyle\\The\ mean \ is:\\\\(1*2+4+5*4+7*2)/(9) =\\\\(41)/(9) =\\\\\approx4,56\\\\The\ median\ is:\\\\5\\\\The\ mode\ is:\\\\5`