The table shows the mean monthly temperatures in Alcudia for the last 2 years in degrees Celsius. °C Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Last Year 9 10 11 14 19 22 27 29 21 18 11 6 2 Years Ago 7 11 10 13 17 23 25 25 20 18 12 9 What is the difference in the range of temperature between the two years? °C What was the modal temperature last year? °C What was the median temperature 2 years ago? °C

To find:

1. Range of temperature between two years

2. Modal temperature last year

3. Median temperature 2 years ago.

Solution:

1. Range is difference between the highest and lowest value.

Range of last year = highest value-lowest value

= 27-6 = 23

Range 2 years ago = highest value - lowest value

= 25-17 = 18

So, difference in range of temperature between two years = 23-18 = 5

2. Modal temperature last year = 11°C

(number that appears most frequently in the series arranged in numerical

order from smallest to largest)

3. Median temperature 2 years ago,

Median = middle number of the series.

Arrange numbers from lowest to highest. As this series contains even

numbers of entries, so median is average of middle numbers. So, (13+17) / 2 = 15