Question

Which type(s) of graph can be plotted using the following data set of number of flights arrival per minute in different hours of the day in an airport? Time (hours) Arrivals per minute

$0600-0700$	$4$
$0700-0800$	$2$
$0800-0900$	$4$
$0900-1000$	$3$
$1000-1100$	$5$
$1100-1200$	$1$

• A. Bar graph
• B. Histogram
• C. Line graph
• D. None of the above.

Answer 1

Answer: (B), (C)

Line graph

The given data is a grouped frequency table of the number of flights arrival per minute in an airport.

We know that histograms are plotted from a grouped frequency table.
The respective histogram is as follows:
As it does not give any precise data, we can not plot a bar graph.

Also, if we connect the top midpoint of each rectangular bar, a frequency polygon i.e. a line graph is obtained.
Hence, options (b) and (c) are correct.