Question

the rainfall in a city for 7 days 12mm, 13mm, 15mm, 21mm, 20mm, 12mm and 9mm find mean mode median and range​

Answer 1

Answer:

12mm, 13mm, 15mm, 21mm, 20mm, 12mm, 9mm

Step-by-step explanation:

MEDIAN=21mm

Answer 2

Answer :

• Mean - 14.5
• Mode = 12
• Median = 21
• Range = 12

Given :

• 12mm, 13mm, 15mm, 21mm, 20mm, 12mm, and 9mm.

To find :

• mean
• mode
• median
• range​

Solution :

⇒ Let's find the Mean.

Mean = Value of all observations /Number of observations

= 12 + 13 + 15 + 21 + 20 + 12 + 9/7

= 25 + 15 + 21 + 20 + 12 + 9/7

= 40 + 21 + 20 + 12 + 9/7

= 61 + 20 + 12 + 9/7

= 70 + 20 + 12/7

= 90 + 12/7

= 102/7

= 14.5

• Therefore, the mean is 14.5.

Mode = 12 + 13 + 15 + 21 + 20 + 12 + 9

= 9 + 12 + 12 + 13 + 15 + 20 + 21

= 12

• Therefore, the mode is 12.

Median = 12 + 13 + 15 + 21 + 20 + 12 + 9

= 21

• Therefore, the Median is 21.

Range = Highest - Smallest value

= 21 - 9

= 12

• Therefore, the Range is 12.