Question

help please
please solve 10th Question​

Answer 1

Answer:

Infrastructure is the set of fundamental facilities and systems that support the sustainable functionality of households and firms. Serving a country, city, or other area, including the services and facilities necessary for its economy to function.

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Answer 2

To find the class mark (xi) for each interval, the following relation is used.

Class mark (xi) =

xi and fixi can be calculated as follows.

Number of plants

Number of houses

(fi)

xi

fixi

0­ − 2

1

1

1 × 1 = 1

2­ − 4

2

3

2 × 3 = 6

4 − 6

1

5

1 × 5 = 5

6 − 8

5

7

5 × 7 = 35

8 − 10

6

9

6 × 9 = 54

10 − 12

2

11

2 ×11 = 22

12 − 14

3

13

3 × 13 = 39

Total

20

162

From the table, it can be observed that

Mean,

Therefore, mean number of plants per house is 8.1.

Here, direct method has been used as the values of class marks (xi) and fi are small