MEASURES OF POSITION

In a 70-item test, Melody got a score of 50 which is the third quartile. This means that:

• seventy-five percent of the class did not pass the test

• her score is higher than 25% of her classmates.

• her score is higher than 25% of her classmates.

• she surpassed 75% of her classmates.

Rochelle got a score of 55 which is equivalent to 70th percentile in a mathematics test. Which of the following is NOT true?

• Thirty percent of the class got scores of 55 and above.

• Her score is below the 5th decile.

• If the passing mark is the first quartile, she passed the test.

• She scored above 70% of her classmates.

What percent of the students who took the exam have the lower scores than Jose if Jose's score is at the 95th percentile rank?

• 75

• 80

• 90

• 95

Which of these fractiles divides the data set into four equal parts?

• Decile

• Median

• Percentile

• Quartile

The data shows the score 0f 11 students in Mathematics short quiz.

1, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9

Find D₆.

• 6

• 6.2

• 6.5

• 6.8

The lower quartile is equal to ______________.

• 50th percentile

• 25th percentile

• 2nd decile

• 3rd quartile

Which of these percentiles refer to the median?

• P₁₀

• P₂₅

• P₅₀

• P₇₅

Mel’s score in a 75 - item test was the median score.

What is his percentile rank?

• 50^th

• 35^th

• 75^th

• 25^th

consider the score distribution of 15 students given below:

72 , 73 , 74 , 74 , 77 , 79 , 79 , 79 , 80 , 81 , 82 , 82 , 83 , 86 , 87

The P80 score is:

• 83.8

• 84

• 84.8

• 85

What is the maximum value?

• 58
• 66
• 64
• 60