**Unformatted text preview: **MAT102 Practice Test 3 Round decimal answers to the nearest hundredths place. 1. Using the Stem—and-Leaf Chart find the: 3 47 8
Mean ___ 4 1 3 5 6
Median 5 2 5679 6 46
lVIode 2. Calculate the following given: 61, 62,62, 65, 65, 68, 69, 70,72, 76 i l —i ‘r— l J—t ~—' ,’ + l
i
f 9 i; a ,- . , .
t9b Kw; lab (0"?) if) f A i ll 4. Suppose a student calculated their quiz grade average to be an 81, but had mistakenly entered 78 for one of the values when it should have been an 87. How does this affect their calculation?
/ i d ’ ,9 e ‘26:} M , i Mi
‘ ‘r i utilize»; x 5. The average of 14 numbers is 105. One of the numbers is removed and the average is now 99. Find the value of the number that was removed. 6. There are three ostriches at Jim-Bob‘s Petting Zoo. The average of their ages is 38. The median
of their ages is 40. The range of their ages is 32. What are the ostriches ages? 7. Suppose we measured everyone's height in our class and calculated the mean, median and
mode. Now suppose Chandra Dangi (shortest person in the world) walks in and we include his
height, what are we certain would happen, statistically speaking? A. The median would decrease. a B. The meanwould decreas
CThe mode would decrease.
D. All of the above. 8.
(A. The mean would decrease. *‘ ”Ti-«g, i: if?
B. The standard deviation would decrease. C. Both the mean and standard deviation would decrease. D. None of the above. 9. If we multiplied every value in a distribution by 10 what would happen? A. The mean would increase.
B. The standard deviation would increase.
if C. Both the mean and standard deviation would increase. D. None of the above. Points A, B and C are coplanar. Use the diagram to the P
right for Questions 10 — 14 10. Find a line that is skew to E t»
11. The intersection of plane ABC and line PB is: i‘ l i B 12. The intersection of plane ABC and plane ACP is: . 13. Are any of these line segments parallel to BE ? :3 14. Are any of these line segments perpendicular to 51—5? l‘ﬂ ‘ ” j
h
15. Find the measure of x.
3/. l 60.3
5 X 3x 16. Find the measure of LBCD given that AABC = 36° and
/_CDE = 48° and 1'32 n BE 18. Convert 55,000inches into miles. (Round decimals off to the nearest hundredths place) *1 mile = 5,280 feet 19. Find the measure of A. 20. Find the measure of B. 21. A regular pentagon (5 sides) has an interior angle
measure of: Use the figure to the right for Questions 22 - 24
Given 13511373 and AQSR = 55° and 2QR5 = 65° 22. Find the measure of APSQ 23. Find the measure of LPQS 24. Find the measure of ASQR 25. Two angles are complimentary. One angle is 5 times the measure of the other angle. What is
the measure of the larger angle? 5 , ' (2:73 M ~
26. An angle is three times the measure of its supplement. Find the measure of this angle.
' m 27. A circle has a diameter of 12cm. Find it's circumference. *Do not approximate 7T. Use it in your answer. , y 28. A circle with a circumference of 20 feet has a radius of: *Do not approximate 7:. Use it in your answer. Using only vertical angles, the 5 triangle congruence properties we discussed in class, and
properties of parallel lines determine the following answers to Questions 29 - 33 29. Given A—B— ll 5 which property proves these triangles are
congruent? _, l 1 g ,
'2 \ 33. Which property proves these triangles are congruent? ...

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- Fall '17
- Andre Perkoski
- Math