1. For which of these would you use a histogram to show the data?
(a) The number of letters for different areas in a postman's bag.
(b) The height of competitors in an athletics meet.
(c) The number of cassettes produced by 5 companies.
(d) The number of passengers boarding trains from 7:00 a.m. to 7:00 p.m. at a
station.
Give reasons for each.
Answers
Answer:
A is the correct answer for this.
Answer:
Data: the facts or figures(i.e. observation/ information collected) which are numerical or otherwise; collected with a definite purpose, are called data.
Histogram:
Histogram is a graphical representation of a grouped frequency distribution in exclusive form ( 0-10, 10-20) with continuous classes in the form of rectangles with class intervals as bases and the corresponding frequencies as Heights.
There is no gap between any two consecutive rectangles.
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Solution:
Since histogram is graphical representation of data, if data is represented in the form of class interval.
In cases (b) and (d), we use a histogram to show the data, because in these cases, data can be divided into class-intervals.
In case (b), a group of competitions having different heights in athletics meets.
In case (d), the number of passengers boarding trains in an interval of one hour at a station.
In cases (a) & (c) we do not know the The number of letters for different areas in a postman’s bag & The number of cassettes produced by 5 companies.
Step-by-step explanation: