20. THE FOLLOWING ARE THE HEIGHTS IN CM OF THE FIRST EIGHT STUDENTS WHO ENROLLED IN UNIVERSITY HEIGHTS: 163, 191, 120, 170, 180, 172, 165, 158

CHOOSE THE CORRECT ANSWER OF THE FF: FIND THE MEAN 165.66 168.5 164.88 167.5 FIND THE MEDIAN 167.5 168.5 164.88 165.66 FIND THE MODE 165.66 167.5 164.88 NONE FIND THE RANGE 41 61 71 51 P34 158 120 65 163 P87 180 170 172 191 D5 172 180 170 165 Q2 170 180 165 172 Q3 170 172 165 180 FIND THE VARIANCE 436.13 563.32 342.23 3052.85 FIND A STANDARD DEVIATION 32.31 21.88 49.33 20.88

21. SCORES IN MATM 111 FINAL DEPARTMENTAL EXAMINATION, FOLLOW A NORMAL DISTRIBUTION WITH A MEAN OF 65 IN STANDARD DEVIATION OF 8. IF A STUDENT IS TO BE SELECTED,

CHOOSE THE CORRECT ANSWER ON THE FF:

WHAT IS THE CORRESPONDING Z-SCORE OF 85? -2.5 +2.22 -2.22 +2.5

WHAT IS THE PROBABILITY THAT THE STUDENT SCORE IS GREATER THAN 85?

49.38% 99.38% 6.2% 0.62%

WHAT IS THE CORRESPONDING Z SCORE OF 56?

+1.12 -1.13 +1.13 -1.12

WHAT IS THE PROBABILITY THAT THE STUDENT'S SCORE IS LESS THAN 56?

12.92% 87.08% 13.14% 37.08%

IF THERE ARE 2000 STUDENTS WHO TOOK THE EXAM, HOW MANY OF THEM SCORED GREATER THAN 85?

14 16 13 15

22. THE FOLLOWING ARE THE SCORES OF STUDENTS RECEIVE IN QUIZZES IN MATH AND SCIENCE

MATH (X): 90, 98, 83, 78, 85, 70 SCIENCE (Y): 73, 78, 72, 91, 67, 80, FIND: X

42802 35767 504 461 Y

42802 504 461 35767 X

42802 504 461 35767 Y

461 35767 504 42802

XY

42802 38583 35767 461

WHAT IS THE VALUE OF R?

+0.35 -0.95 +0.95-0.35

WHAT DOES R MEANS?

A. THERE IS A WEAK POSITIVE RELATIONSHIP BETWEEN THE QUIZZES IN MATH AND SCIENCE B. THERE IS A STRONG POSITIVE RELATIONSHIP BETWEEN THE QUIZZES IN MATH AND SCIENCE C. THERE IS A WEEK NEGATIVE RELATIONSHIP BETWEEN THE QUIZZES IN MATH AND SCIENCE D. THERE IS A STRONG NEGATIVE RELATIONSHIP BETWEEN THE QUIZZES IN MATH AND SCIENCE

COMPUTE FOR A

-102.25 0.30 -0.30 102.25 COMPUTE FOR B

-0.30 102.25 0.30 -102.25 LINEAR REGRESSION EQUATION Y= -0.30X - 102.25 Y= -0.30X + 102.25 Y=0.30X + 102.25 Y=0.30X-102.25