Q. 84.4( 49 Votes )

The rainfal

Answer :

(i) Now,


We have to find the range of the given data.


And,


We know that,


Highest rainfall = 20.5mm


Lowest rainfall = 0.0mm


Thus,


Range = Highest value – Lowest value


Hence,


Range of the given data can be calculated as follows:


Range = highest rainfall – lowest rainfall


= 20.5 – 0.0


= 20.5 mm


(ii) Here,


We have to find the mean of the rainfall for the week


Now,


At first,


We’ll find the sum of all the observations


Thus,


Sum of all the observations = 0.0 + 12.2 + 2.1 + 0.0 + 20.5 + 5.5 + 1.0


= 41.3


Now,


Total number of observations = 7


Hence,


Mean rainfall =


=


= 5.9 mm


(iii) Here,


As per the question,


We have to find that,


The number of days when the rainfall was less than the mean rainfall


Hence,


We can observe that,


For total five days, the rainfall was less than the mean rainfall


Now,


These days are as follows:


Monday, Wednesday, Thursday, Saturday and Sunday

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
RELATED QUESTIONS :

The marks in a suNCERT - Exemplar Mathematics

<span lang="EN-USNCERT Mathematics

<span lang="EN-USNCERT Mathematics

<span lang="EN-USNCERT Mathematics

The following areNCERT - Exemplar Mathematics

Find the median oNCERT - Exemplar Mathematics

Find the median oNCERT - Exemplar Mathematics

Find the mean of NCERT - Exemplar Mathematics

State whether theNCERT - Exemplar Mathematics

State whether theNCERT - Exemplar Mathematics