Page 118 - Ganit Kaushal

She used this data and prepared a bar graph on the board to discuss the data with her students, but
someone erased a portion of the graph. Help her answer the following questions:

(a) The bar for Vidisha is 6 unit lengths, and the bar for
Jabalpur is 5 unit lengths. What is the scale for this
graph?
(b) Write the number of tickets sold for Jabalpur above
the bar.

(c) Write the number of tickets sold for Vidisha above
the bar.
(d) Draw the correct bar for Sagar.
(e) Add the scale of the bar graph, placing the correct
numbers on the axis.

(f) Are the bars for Seoni and Indore correct in this graph? If not, draw the correct bar(s). (NCERT)
Sol. (a) For Vidisha, bar length is 6 units, no. of tickets is 24.

\ Scale = (24 ÷ 6) = 4 tickets per unit.
For Jabalpur, bar length is 5 units, no. of tickets = 20.
\ Scale = 20 ÷ 5 = 4 tickets per unit.

\ Hence, the scale for the bar graph is 1 unit = 4 tickets.
(b) 20 tickets are sold for Jabalpur, which is marked
in the graph shown alongside.

(c) 24 tickets are sold for Vidisha, which is marked
in the graph shown alongside.
(d) The correct bar for Sagar is drawn with a blue
vertical bar shown alongside in the graph.
(e) The scale of the bar graph, placing the correct
numbers on the vertical axis is shown alongside.

(f) The bar for Seoni was correct but the bar for
Indore was incorrect. The correct bar is shown
alongside in the graph with green dotted lines.
Ex 4. Samantha visited a tea garden and collected data on the insects and critters she saw there. Here is the
data she collected —

Mites Caterpillars Beetles Butterflies Grasshoppers
6 10 5 3 2

Help her prepare a bar graph representing this data. (NCERT)

116 Mathematics-6