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05 Jun 2024, 07:10
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The scores between 61 and 80, both inclusive are positively correlated to those between 81 and 100 both inclusive.: No
The scores between 21 and 40, both inclusive is positively correlated to those between 81 and 100 both inclusive.: Yes
The scores between 41 and 60, both inclusive is positively correlated to those between 61 and 80 both inclusive.: No
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Difficulty:
95%
(hard)
Question Stats:
32% (02:14) correct
68%
(02:10)
wrong
based on 748
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Fifty students of grade tenth in a high school took a test in each of the four subjects (Maths, Physics, Chemistry and English). All scores are rounded off to nearest integer and the maximum score possible is 100. The table shows the number of 50 students who scored between 21 and 100, both inclusive. For example, 10 students scored between 21 and 40, both inclusive.
(Sort ↕ the table by clicking on the headers)
For each of the following statements about these scores, select Yes if the statement is accurate based on the information provided. Otherwise, select No.
SCORES | ||||
| Subject | 21-40 | 41-60 | 61-80 | 81-100 |
|---|---|---|---|---|
| Maths | 4 | 13 | 21 | 5 |
| Physics | 10 | 14 | 14 | 12 |
| Chemistry | 3 | 12 | 20 | 15 |
| English | 9 | 13 | 18 | 10 |
For each of the following statements about these scores, select Yes if the statement is accurate based on the information provided. Otherwise, select No.
| Yes | No | |
| The scores between 61 and 80, both inclusive are positively correlated to those between 81 and 100 both inclusive. | ||
| The scores between 21 and 40, both inclusive is positively correlated to those between 81 and 100 both inclusive. | ||
| The scores between 41 and 60, both inclusive is positively correlated to those between 61 and 80 both inclusive. |
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Official Answer
The scores between 61 and 80, both inclusive are positively correlated to those between 81 and 100 both inclusive.: No
The scores between 21 and 40, both inclusive is positively correlated to those between 81 and 100 both inclusive.: Yes
The scores between 41 and 60, both inclusive is positively correlated to those between 61 and 80 both inclusive.: No
08 Jun 2024, 06:39
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Can someone please help me with the logic here? Seems like a NO, NO , YES to me...
08 Jun 2024, 12:37
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UnicornAngel
Here the question is asking for a positive correlation between the given ranges of scores, so if for instance, one column has increasing data then the other also had to have increasing data for the most part as well, and vice versa
So for the 1st question, if we sort the table for 61 - 80 we can see it increases but at the same time 81 -100 decreases same for the 3rd question 41- 60 also decreases
But for 2nd if we sort for 81-100 it increases and so is 21 - 40 for most cases except the last row which can be ignored
