"Average Score of Students on Math Exam"
Data Presentation
Presented to:
[...]
Math Teacher
Presented by:
[...]
Math Subject
Grade 10 - [...]
June 13 2023
Have you ever wondered if your Mathematic exam score is good enough? Periodical exams play a crucial role in assessing our knowledge and understanding of various concepts, problem-solving, and analytical skills; it's worrying about having a score you didn't expect, thinking about whether it is good enough or not but worry not because we three decided to find out what average exam score of a student.
Question asked:
"What average score do you get on a math periodical exam?"
Data gathered:
45 43 34 18 24 10
42 32 33 20 20 8
23 13 38 16 36 7
22 25 35 22 11 9
30 48 37 31 51 15
Quartile: 1
Decile: 8
Percentile: 80
•Scores Tally Frequency Low Boundaries LCF
43 - 51 III 3 42.5 30
34 - 42 IIIII-II 7 33.5 27
24 - 33 IIIII-IIII 9 23.5 20
16 - 23 IIIII 5 15.5 11
7 - 13 IIIII-I 6 6.5 6
; = 9 N = 30
——×××
Q1
Q1 = 1(30)4 = 7.5
Q1 = 6.5 + 7.5 - 669
= 8.75
[Q1 = 9]
——×××
D8
D8 = 8(30)10
= 24010
D8 = 24th
D8 = 33.5 + 24-2069
D8 = [39]
P80
——×××
P80 = 80(30)100
= 2400100
= 24th
P80 = 33.5 + 24 -2079
P80 = [38]
——×××
[Therefore, 25% of the number of scores is less than or equal to 9]
[Therefore, 80% of the number of scores is less than or equal to 39]
[Therefore, 100% of the number of scores is less than or equal to 38]
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