CBSE Class 10-Mathematics: Chapter – 14 Statistics Part 13 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 6:

Find the median of the following frequency distribution:

Find the Median of the Following Frequency Distribution
Wages (in ₹)
No. of Labourer

Answer:

We have

Frequency Distribution
Wages (in ₹)No. of labourer (f)C. F
200 - 30033
300 - 40058
400 - 5002028
500 - 6001038
600 - 700644

Now and this lies in class.

Median class

Here,

We know that

Question 7:

The following tables gives production yield per hectare of wheat of farms of village:

The Following Tables Gives Production Yield Per Hectare
Production yield
No. of farms2812243816

Change the distribution to a more than type distribution and draw its O give.

Answer:

More than type O give

More Than Type O Give
Production yield (Kg/ha)C. F
More than or equal to 50
More than or equal to 55
More than or equal to 60
More than or equal to 65
More than or equal to 70
More than or equal to 75

Now, draw the O given by plotting the points

Plotting the Points

Question 8:

The A. M of the following distribution is . Determine the value of P.

The a. M of the Following Distribution
Classes
Frequency

Answer:

We have

Determine the Value of P
Class IntervalMid-value Frequency
0 - 2010880
20 - 403015450
40 - 6050201000
60 - 8070P70P
80 - 100905450

Since Mean,

Thus,

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