Question

Average is 17 number of quantities is 9 then sum of the number ?

Answer 1

Answer:

Average =sum of data/number of data

17 = sum of data/9

sum of data= 17×9=153.

Answer 2

Given:

• Average or mean = 17
• Number of quantities = 9

To find:

1. Sum of the numbers = ?

Method:

Apply the below formula

$\boxed{\bf{Mean = \dfrac{Sum \: of \: all \: observations}{Total \: Number \: of \: observations}}}\\\\\\\implies \sf{17 = \dfrac{Sum \: of \: all \: observations }{9}}\\\\\\\implies \sf{Sum \: of \: all \: observations = 17 \times 9}\\\\\\\implies \boxed{\sf{ \therefore Sum \: of \: all \: quantities = 153}}$

Additional Information:

1. There are 3 measures of Central Tendency. These are Mean, Median and Mode.
2. Median is the middlemost term in the list of numbers which are arranged in ascending or descending order.
3. Mode is the most repeated term in the given set of numbers