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Data Handling — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSData Handling5 Marks
Question
Study the double bar graphs given below and answer the following questions:

$a.$ What information is represented by the above double bar graph?
$b.$ In which month sales of brand $A$ decreased as compared to the previous month?
$c.$ What is the difference in sales of both the brands for the month of June?
$d.$ Find the average sales of brand $B$ for the six months.
$e.$ List all months for which the sales of brand $B$ was less than that of brand.
$f.$ Find the ratio of sales of brand $A$ as compared to brand $B$ for the month of January.
✓

Answer

$a.$ The above double bar graph compares the sale of brands $A$ and $6$ during the months of January to June.
$b.$ We can clearly see from the double bar graph that sales for brand $A$ reduced in the month of March compared to that of February.
$c.$ Sales of brand $A$ in June $= 157$ lakh and sales of brand $6$ in June $= Rs. 54$ lakh
Difference in sales $= 57 - 54 = Rs. 3$ lakh
$d.$ Average sales of brand $B$
$=\frac{\text{Total sales of brand $B$ in six months from January to June}}{6}$
$=\frac{36+38+43+35+45+54}{6}$
$=\frac{251}{6}$
$=41.83$ lakh
$e.$ We can clearly see from the double bar graph that sales of brand $S$ is less than sales of brand $A$ in the month of April and June.
$f.$ Sales of brand $A$ in January $= 31$ and sales of brand $S$ in January $= 36$
$\therefore$ Required ratio $=\frac{31}{36}$ or $31 : 366$

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