Question

		Milligrams of Iron
	$1$	$2$	$3$	$4$	$5$
Cast iron	$0.50$	$0.59$	$0.62$	$0.45$	$0.39$
Hematite	$0.85$	$0.84$	$0.95$	$0.50$	$0.45$
Magnetite	$0.37$	$0.49$	$0.77$	$0.50$	$0.36$

Whats is the difference of median of milligrams of iron found in samples of Haematite and cast iron from the above table. The data is of milligrams of iron found in $10$ milligrams of each of the sample from Ladakh region.

• A. $0.00$
• B. $0.37$
• C. $0.34$
• D. $0.54$

Answer 1

Answer: (C)

$0.34$

On rearranging data for hematite, we get
$0.45,0.50,0.84,0.85,0.95$
Median of milligram of hematite$=0.84$
Again, on rearranging data for cast iron, we get
$0.39,0.45,0.50,0.59,0.62$
Median of milligram of cast iron$=0.50$
$\therefore \text{Difference of median of both}=0.84-0.50=0.34$
Option C is correct.