1. If the mean of 4 observations is 15 and three observations are 12, 16, 18, what is the fourth observation?
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Mth – Quarter 4
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2. What is the altitude of a triangle in an obtuse triangle from an acute vertex?
3. What is the point of concurrency of the medians of a triangle called?
4. What is the mode of the frequency distribution: 1 occurs 2 times, 2 occurs 3 times, 3 occurs 4 times, 4 occurs 2 times?
5. Which tool is used to draw perpendicular bisectors in practical geometry?
6. Find the mean of: 10, 20, 30, 40, 50.
7. How many altitudes can a triangle have?
8. What is the class midpoint of the interval 20-30?
9. What is the mode of the data set: 5, 5, 5, 7, 7, 8, 9?
10. A median of a triangle divides the triangle into:
11. What is the relative frequency of an event if it occurs 25 times out of 100 trials?
12. Two coins are tossed. What is the probability of getting exactly one head?
13. What is the point of intersection of the angle bisectors of a triangle called?
14. Which tool is used to draw perpendicular bisectors in practical geometry?
15. If the mean of 5 numbers is 8, what is their sum?
16. The mode of the data: 1, 1, 2, 2, 2, 3, 4 is:
17. The estimated probability of an event based on 100 trials is 0.4. How many times did the event occur?
18. What is the mean of the data set: 4, 8, 6, 5, 3?
19. In a frequency distribution, the class interval 10-20 has class mark:
20. The sum of frequencies in a grouped frequency distribution is 50. The sum of the relative frequencies is: