Question

The relative humidity (in %) of a certain city for a month of 30 days was as follows:
$\begin{array}{cccccccccc}98.1& 98.6& 99.2& 90.3& 86.5& 95.3& 92.9& 96.3& 94.2& 95.1\\ 89.2& 92.3& 97.1& 93.5& 92.7& 95.1& 97.2& 93.3& 95.2& 97.3\\ 96.2& 92.1& 84.9& 90.2& 95.7& 98.3& 97.3& 96.1& 92.1& 89\end{array}$
(i) Construct a grouped frequency distribution table with classes $84-86,86-88$, etc.
(ii) Which month or season do you think this data is about?
(iii) What is the range of this data?

Answer 1

Relative Humidity (in $\%$)	Frequency
$84-86$	$1$
$86-88$	$1$
$88-90$	$2$
$90-92$	$2$
$92-94$	$7$
$94-96$	$6$
$96-98$	$7$
$98-100$	$4$
$\text{Total}$	$30$

(i) The table above is the frequency distribution.

(ii) The data appears to be taken in the rainy season as the relative humidity is high.
(iii) Range of data $=$ Maximum value - Minimum value $=99.2-84.9=14.3$