Question : The following table shows the number of children in each house of a society.
| Number of Children | Number of Houses |
| 0 | 7 |
| 1 | 7 |
| 2 | 13 |
| 3 | 3 |
What is the average number of children per house?
Option 1: 1.65
Option 2: 1.4
Option 3: 1.9
Option 4: 1.15
Correct Answer: 1.4
Solution :
According to the data given in the table:
Total number of children = 0 × 7 + 1 × 7 + 2 × 13 + 3 × 3 = 42
Total number of houses = 7 + 7 + 13 + 3 = 30
So, the average number of children per house = $\frac{\text{Total number of children}}{\text{Total number of houses}}$
= $\frac{42}{30}$
= 1.4
Hence, the correct answer is 1.4.
Related Questions
Question : The table given below shows the number of officers working in six companies.
| Companies | Officers |
| P | 150 |
| Q | 250 |
| R | 350 |
| S | 100 |
| T | 200 |
| U | 550 |
What is the ratio of number of officers working in Q to the number of officers working in R?
Option 1: $7 : 5$
Option 2: $6 : 7$
Option 3: $7 : 4$
Option 4: $5 : 7$
Question : The table given below shows the number of salesmen in five companies.
| Companies | Salesman |
| J | 45 |
| K | 20 |
| L | 40 |
| M | 15 |
| N | 25 |
The number of salesmen in J is what percentage of the number of salesmen in K?
Option 1: 250%
Option 2: 150%
Option 3: 125%
Option 4: 225%
Question : The table given below shows the number of spoons manufactured by five factories.
| Factory | Spoons |
| P | 100 |
| Q | 200 |
| R | 150 |
| S | 50 |
| T | 250 |
What is the ratio of the number of spoons manufactured by P to the number of spoons manufactured by R?
Option 1: 3 : 2
Option 2: 2 : 3
Option 3: 14 : 1
Option 4: 1 : 3
Question : Refer to the data table and answer the following question.
| Marks | Number of students |
| 40 and above | 25 |
| 30 and above | 44 |
| 20 and above | 56 |
| 10 and above | 86 |
| 0 and above | 100 |
How many students have scored marks 20 or more but less than 40?
Option 1: 31
Option 2: 56
Option 3: 44
Option 4: 100
Question : Refer to the following data table and answer the question.
| Weight (kg) | Height (m) | |
| Apeksha | 59 | 1.8 |
| Apsara | 51 | 1.72 |
| Aradhana | 62 | 1.57 |
| Archana | 74 | 1.68 |
Who has the lowest weight-to-height ratio?
Option 1: Apeksha
Option 2: Apsara
Option 3: Aradhana
Option 4: Archana
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