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If the average selling price of 15 books is ₹ 235, then the total selling price is __________ - Mathematics

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प्रश्न

If the average selling price of 15 books is ₹ 235, then the total selling price is __________

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उत्तर

If the average selling price of 15 books is ₹ 235, then the total selling price is 3,525

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पाठ 5: Statistics - Exercise 5.1 [पृष्ठ ९९]

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सामाचीर कलवी Mathematics - Term 3 [English] Class 7 TN Board
पाठ 5 Statistics
Exercise 5.1 | Q 1. (ii) | पृष्ठ ९९

संबंधित प्रश्‍न

The enrolment in a school during six consecutive years was as follows:

1555, 1670, 1750, 2013, 2540, 2820

Find the mean enrolment of the school for this period.


The mean is one of the numbers in a data.


Solve any two of the following. 

In some families in a colony the daily purchase of milk in litre is 1, 3, 2, 2, 4, 1, 2, 2, 1. Find the mean, median and mode of daily purchase of milk. 


The mean of 5 observations is 50. One of the observations was removed from the data, hence the mean became 45. Find the observation which was removed.


The following table shows the electricity (in units) used by 25 families of Eklara village in a month of May. Complete the table and answer the following questions.

Electricity used
(units) `bb(x_i)`
No. of Families
(frequency) `bb(f_i)`
`bb(f_ix_i)`
30 7 _________
45 2 __________
60 8 __________
75 5 __________
90 3 __________
  N = _________ `sum f_ix_i` = ______
  1. How many families use 45 units electricity?
  2. State the score, the frequency of which is 5.
  3. Find N, and `sum f_ix_i`
  4. Find the mean of electricity used by each family in the month of May.

A batsman scored the following number of runs in six innings: 36, 35, 50, 46, 60, 55. Calculate the mean runs scored by him in an inning.


The mean of runs scored by a cricket team in the last 10 innings is 276. If the scores are 235, 400, 351, x, 100, 315, 410, 165, 260, 284, then find the runs scored in the fourth innings


The average of two numbers are 20. One number is 24, another number is ____________


Mean can never be a fraction.


The following are weights (in kg) of 12 people. 70, 62, 54, 57, 62, 84, 75, 59, 62, 65, 78, 60. Find the mean of the weights of the people.


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