"Question 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.
Data Handling Page 76"
Answers
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.
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Hope this will help you....
Answer:
in b and d we can use histogram
Step-by-step explanation:
(a) We can't use histogram in this case because we cannot define the class intervals for this data.
(b) We can use histogram here, because it will be easy to divide the data in class intervals.
(c) We do not have approximate data we wont use a histogram. We do not know about the number of cassettes produced by companies.
(d) We can use histogram in this case on we can divide the given data into class intervals.