Electricity energy consumption is the form of energy consumption that uses electric energy. Global electricity consumption continues to increase faster than world population, leading to an increase in the average amount of electricity consumed per person (per capita electricity consumption).

Electricity energy consumption - Teachoo.jpg

A survey is conducted for 56 families of a Colony A. The following tables gives the weekly consumption of electricity of these families.

Weekly consumption (in units)

0-10

10-20

20-30

30-40

40-50

50-60

No. of families

16

12

18

6

4

0

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Refer to data received from Colony A

Question 1

The median weekly consumption is
(a) 12 units
(b) 16 units
(c) 20 units
(d) None of these

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Question 2

The mean weekly consumption is
(a) 19.64 units
(b) 22.5 units
(c) 26 units
(d) None of these

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Question 3

The modal class of the above data is I
(a) 0 - 10
(b) 10 - 20
(c) 20 - 30
(d) 30 - 40

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Refer to data received from Colony B

Question 4

The modal weekly consumption is
(a) 38.2 units
(b) 43.6 units
(c) 26 units
(d) 32 units

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Question 5

The mean weekly consumption is
(a) 15.65 units
(b) 32.8 units
(c) 38.75 units
(d) 48 units

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  1. Chapter 14 Class 10 Statistics (Term 2)
  2. Serial order wise

Transcript

Question Electricity energy consumption is the form of energy consumption that uses electric energy. Global electricity consumption continues to increase faster than world population, leading to an increase in the average amount of electricity consumed per person (per capita electricity consumption). A survey is conducted for 56 families of a Colony A. The following tables gives the weekly consumption of electricity of these families.The similar survey is conducted for 80 families of Colony B and the data is recorded as below:Refer to data received from Colony A Question 1 The median weekly consumption is (a) 12 units (b) 16 units (c) 20 units (d) None of these(c) 20 units Question 2 The mean weekly consumption is (a) 19.64 units (b) 22.5 units (c) 26 units (d) None of these(a) 19.64 units Question 3 The modal class of the above data is I (a) 0 - 10 (b) 10 - 20 (c) 20 - 30 (d) 30 - 40(c) 20 - 30 Refer to data received from Colony B Question 4 The modal weekly consumption is (a) 38.2 units (b) 43.6 units (c) 26 units (d) 32 units(b) 43.6 units Question 5 The mean weekly consumption is (a) 15.65 units (b) 32.8 units (c) 38.75 units (d) 48 units(c) 38.75 units

Chapter 14 Class 10 Statistics (Term 2)
Serial order wise

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.