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(if you have any topic related video then share link with us)Related QuestionsVIEW ALL [13]
The following frequency distribution table shows the distances travelled by some rickshaws in a day. Observe the table and answer the following questions
Class (daily distance travelled in km)  continuous classes  Frequency (no.of. rickshaws)  Cumulative frequency less than type 
60  64  59.5  64.5  10  10 
65  69  64.5 69.5  34  10+34=44 
70  74  69.5  74.5  58  44+58=102 
75  79  74.5  79.5  82  102+82=184 
80  84  79.5  84.5  10  184+10=194 
85  89  84.5  89.5  6  194+6=200 
1) Which is the modal class? Why?
2) Which is the median class and why?
3) Write the cumulative frequency (C.F) of the class preceding the median class.
4) What is the class interval (h) to calculate median?
The following data shows the number of students using different modes of transport:
Modes of Transport  Number of Students 
Bicycle  140 
Bus  100 
Walk  70 
Train  40 
Car  10 
From this table, find the central angle (θ) for the Mode of Transport ‘Bus’.
The following table gives the information of frequency distribution of weekly wages of 150 workers of a company. Find the mean of the weekly wages by 'step deviation' method.
Weekly wages (Rupees)

1000  2000  2000  3000  3000  4000  4000  5000 
No. of workers  25  45  50  30 