Data Interpretation — Practice

Question 1

Five product lines recorded the following monthly sales (units): P: 310, Q: 275, R: 460, S: 390, T: 365. Find the total and the average.

Accepted Answer

Total $=310+275+460+390+365=1{,}800$. Average $=1800\div5=360$.

Answer: Total = 1,800, Average = 360.

Question 2

Using the same table, what percentage of total sales does product R represent?

Accepted Answer

$\frac{460}{1800}	imes100\approx25.6\%$.

Answer: approximately 25.6%.

Question 3

Find the difference in sales between product P and product Q.

Accepted Answer

$310-275=35$.

Answer: 35 units.

Question 4

Using the same table, how does product S's sales compare to the average of the other four products (P, Q, R, T)?

Accepted Answer

Sum of the other four: $310+275+460+365=1410$. Their average: $1410\div4=352.5$. Product S (390) exceeds this average by $390-352.5=37.5$ units.

Answer: S exceeds the average of the other four by 37.5 units.

Question 5

A shop's monthly sales (₹ thousand) over 5 months are: Jan: 150, Feb: 175, Mar: 160, Apr: 190, May: 205. What percentage of the 5-month total does April represent?

Accepted Answer

Total $=150+175+160+190+205=880$. $\frac{190}{880}	imes100\approx21.6\%$.

Answer: approximately 21.6%.

Question 6

Using the same monthly sales table, find the percentage change in sales from March to April.

Accepted Answer

$\frac{190-160}{160}	imes100=18.75\%$.

Answer: 18.75% increase.

Question 7

Using the same table, find the percentage change in sales from April to May.

Accepted Answer

$\frac{205-190}{190}	imes100\approx7.9\%$.

Answer: approximately 7.9% increase.

Question 8

If a sixth product line, U, is added to the original five-product table (P: 310, Q: 275, R: 460, S: 390, T: 365) and the new overall average becomes 370, find U's sales.

Accepted Answer

New total $=370	imes6=2220$. Original total (5 products) $=1800$. U's sales $=2220-1800=420$.

Answer: 420 units.

Practice — Data Interpretation

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