Q4 M1 - The Quartile for Ungrouped Data

It describes or locates the position of a specific data value within the unclassified data set.

• Mean Position
• Dispersion
• Measures of Central Tendency
• Measures of Position

In the set of scores: 14, 10, 12, 9, 17, 5, 8, 9, 14, 10, 11, the median score is ____.

• 5
• 10
• 11
• 14

In a 40-item test, the passing mark is the 3rd quartile. What should be the score of Seojun for her to pass the test?

• She should answer at most 30 items correctly.
• She should answer at least 30 items correctly.
• She should have a score less than or equal to 30.
• She should have a score less than or equal to the median score.

If you were to locate the lower quartile of the following scores 21, 7, 16, 5, 30, 3, 7, 27, 10, using Mendenhall and Sincich method, what would it be?

• 3
• 5
• 7
• 10

If the upper quartile value of the following scores (3, 4, 4, 5, 6, 7, 7, 8, 8, 9) of 10 students in a Mathematics seatwork is 8, what does this value mean?

• It means that seventy-five percent of the students got a passing score.
• It means that seventy-five percent of the students got a score equal to 8.
• It means that seventy-five percent of the students got a score less than or equal to 8.
• It means that seventy-five percent of the students got a score higher than or equal to 8.

Given the following test scores of a random sample of fifteen students: 40, 38, 29, 45, 45, 35, 42, 40, 28, 15, 23, 33, 20, 18, 28. What are the Q1, Q2, and Q3 values?

• Q1 = 20, Q2 = 33 and Q3 = 40
• Q1 = 20, Q2 = 35 and Q3 = 40
• Q1 = 23, Q2 = 35 and Q3 = 40
• Q1 = 23, Q2 = 33 and Q3 = 40

What could be the correct interpretation of the 1st quartile value in question number 1?

• It means that twenty-five percent of the scores are less than or equal to 20.
• It means that twenty-five percent of the scores are higher than or equal to 20.
• It means that twenty-five percent of the scores are less than or equal to 23.
• It means that twenty-five percent of the scores are higher than or equal to 23.

Edelyn’s Kakanin Delicacies has a number of outlets in Davao del Norte province. The number of Biko in a tub sold at each of her outlets for the past 20 days are: 66, 98, 57, 65, 79, 79, 59, 55, 90, 73, 56, 70, 62, 66, 80, 95, 63, 74, 72, 86. Calculate the 3rd quartile.

• 78.75
• 79.75
• 80.75
• 81.75

A teacher recorded the time (in minutes) spent during her webinar sessions for the 5 consecutive weekdays. Find the lower and upper quartile values using linear interpolation. 120 90 240 120 120 60 90 60 90 60 180 60 120 240 90 120 60 90 240 90 60 120 90 240 180

• Q1 = 75 and Q3 = 150
• Q1 = 75 and Q3 = 170
• Q1 = 80 and Q3 = 150
• Q1 = 80 and Q3 = 170

In a 50-item test, Glenn got a score of 13 which is the 1st quartile. This implies that:

• He got the lowest score.
• 25% of the students who took the test scored better than Glenn.
• Glenn scored lower than the other 75% of the students who took the test.
• Glenn scored lower than the other 25% of the students who took the test.