Interpret Me!
In a 100-item test, the passing mark is the 3rd quartile. What does it imply ? (2 pts)
A. The students should answer at least 75 items correctly to pass the test.
B. The students should answer at least 50 items correctly to pass the test.
C. The students should answer at most 75 items correctly to pass the test.
D. The students should answer at most 50 items correctly to pass the test.
A. The students should answer at least 75 items correctly to pass the test.
The following are the result of a survey made in Grade 10 classes to determine the number of learners who would want to take Science, Technology, Engineering, and Mathematics (STEM) strand. Compute for D5.
(2 pts)
22 35 20 10 12 15 18 25 31 1
D5 = 19
Teacher Aiza, the health coordinator of Labrador High School recorded the height of 40 students in a Grade 10 class for computing Body Mass Index (BMI). Based on the report, Nadine’s height is in the 70th percentile (Assume that the height of the students is different to each other). How many students are shorter than Nadine ? (2 pts)
28 students
How do you determine the specified measure of position for ungrouped data ?
Step 1: Arrange the values in ascending order.
Step 2: Locate the position of Qk , Pk , or Pk .
Step 3 : Find the value in the data set.
Step 4 : Interpret
The 𝐷7 of the Mathematics test scores of 50 students is 39. Which of the following statements is true? (3 pts)
A. 70% of the students got a score less than or equal to 39.
B. 70% of the students got a score equal to 39.
C. 30% of the students got a score less than or equal to 39.
D. 30% of the students got a score equal to 39.
A. 70% of the students got a score less than or equal to 39.
Given the scores of 56, 45, 75, 81, 90, 46, and 65, find the 80th percentile ? (3 pts)
P20 = 84.6
The data set 8 , 1.5 , 5 , 10, 2.5 , 3 , 1 , 4 , 2 , 5.5 represent the number of hours spent on the internet in a week by students in an online Mathematics class. Find the percentile rank of the element 5 ? (3 pts)
60 %
How do you calculate percentile rank ?
PR = b (100%) / n
where PR = Percentile rank
b = number of scores below the testing value n = total number of scores
In the 2019 National Career Achievement Examination (NCAE), Esmeralda’s score in the Mathematics Ability Test is at 87th percentile rank. What does this mean?
(5 points)
A. Esmeralda scored the highest among the examinees.
B. Esmeralda is the 87th in position among all the examinees.
C. Esmeralda’s score is 87 out of 100 points.
D. Esmeralda scored higher than the other 87% of the examinees.
D. Esmeralda scored higher than the other 99% of the examinees.
Find the average of the lower quartile and the upper quartile of the data. (5 pts)
Component Quantity
hard disk 290
monitors 370
keyboards 260
mouse 180
speakers 430
The average is 315.
Find the score of 30th percentile of the following test scores in statistics, ordered by rank. (5 points)
Rank 1 2 3 4 5 6 7 8 9 10
Scores 75 79 80 82 87 88 89 90 95 100
The score is 80
Mechanics
a. The class will be divided into 7 groups. Each group must have a leader, a secretary, and a board raiser . All member of the group will serve as problem solvers.
b. The teacher will present the set of boxes with problems inside them.
c. A group will be randomly chosen to select the box that all groups will answer . Each question is answered with a time limit.
d. The learners will write their final answers on the flash boards and raise them when the host gives the signal.
e. The host will offer points (not greater than the points allotted to the question) for all the groups’ answers and ask each group to deal or not to deal.
- If the group chooses to deal, then it will get the points offered whether the group’s answer is correct or not.
-If the group chooses not to deal, then the group’s answer will be compared to the correct answer. The group will get the points assigned to the question if the answer is correct and will get nothing if the answer is incorrect.
f. The groups’ scores will be totaled after the last problem.