Question : Study the given table and answer the question that follows.
The table shows the number of people who responded to a survey about their favourite style of music.
| Age | 18-20 | 21-30 | 31+ |
| Classical | 8 | 5 | 15 |
| Pop | 5 | 11 | 10 |
| Hip-Hop | 6 | 9 | 8 |
| Rock | 9 | 7 | 13 |
| Total | 28 | 32 | 46 |
What percentage of the total sample indicated that Rock is their favourite style of music (rounded off to 2 decimal places)?
Option 1: 27.36%
Option 2: 18.25%
Option 3: 29.65%
Option 4: 22.35%
Correct Answer: 27.36%
Solution :
Number of people who like rock = 9 + 7 +13 = 29
Total samples = 28 + 32 + 46 = 106
Required percentage = $\frac{\text{People who likes rock}}{\text{Total samples}}\times100$
= $\frac{29}{106}\times100$
= 27.358
= 27.36 (rounded off to 2 decimal places)
Hence, the correct answer is 27.36.
Related Questions
Question : Directions: Select the missing number from the given responses.
| 9 | 8 | 5 |
| 6 | 6 | 7 |
| 2 | ? | 7 |
| 3 | 6 | 5 |
Option 1: 9
Option 2: 4
Option 3: 6
Option 4: 8
Question : Directions: Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 9 | 8 | 7 |
| 6 | 7 | 8 |
| 4 | 5 | 3 |
| 50 | ? | 53 |
Option 1: 51
Option 2: 61
Option 3: 47
Option 4: 52
Question : Directions: Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| ? | 8 | 11 |
| 7 | 6 | 5 |
| 48 | 63 | 72 |
Option 1: 7
Option 2: 5
Option 3: 6
Option 4: 4
Question : Directions: Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 12 | 4 | 11 | 33 |
| 13 | 2 | 6 | 39 |
| 14 | 7 | 5 | 10 |
| 18 | ? | 2 | 9 |
Option 1: 3
Option 2: 5
Option 3: 8
Option 4: 4
Question : Calculate the mean from the following table.
| Scores | Frequencies |
| 0-10 | 2 |
| 10-20 | 4 |
| 20-30 | 12 |
| 30-40 | 21 |
| 40-50 | 6 |
| 50-60 | 3 |
| 60-70 | 2 |
Option 1: 33.4
Option 2: 32.6
Option 3: 35.8
Option 4: 34.2
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