STATISTICS and PROBABILITY GRADE 6
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1 Kansas City Area Teachers of Mathematics 2015 KCATM Math Competition STATISTICS and PROBABILITY GRADE 6 INSTRUCTIONS Do not open this booklet until instructed to do so. Time limit: 20 minutes You may use calculators on this test. Mark your answer on the answer sheet by FILLING in the oval. You may not use rulers, protractors, or other measurement devices on this test. Choice E can be a valid answer. It will indicate that the answer is Not given. Student Name Student Number School
2 Use the following chart for problems Basketball players competing in a high school tournament had their heights measured and the results are displayed in the table below. The heights were recorded to the nearest whole inch. Height Less than to to to 6 2 Over 6 2 # of Players How many players took part in the high school tournament? A. 38 B. 45 C. 54 D To the nearest percent, what is the probability that the player is over 6 2? A. 29% B. 9% C. 11% D. 12% 103. What is the ratio of players 6 1 or taller to players less than 5 8? A. 13:4 B. 5:4 C. 2:1 D. 13: To the nearest percent, what is the probability that the player is 6 tall or under? A. 89% B. 74% C. 24% D. 71% Use these experiment outcomes to answer questions During the experiment, four coins were tossed twelve times. The outcomes were: HHHT HTTT THHT HTHH THHT TTHH HTHT HTTH TTTT HHTT HHHH HHTH 105. Using the experiment, what was the probability of tossing two heads and two tails? A. 0.3 B. 0.4 C. 0.5 D What was the probability of tossing 4 heads or 4 tails? A. 1/2 B. 1/4 C. 1/3 D. 1/ Based on the experiment, if the coins were tossed 200 times, about how many times would you expect 3 heads to be thrown? A. 25 B. 50 C. 100 D You were calculating your grade before your last test of the quarter. Your first 4 tests were: 67%, 84%, 78%, and 90%. What would the minimum grade have to be on your 5 th test score have to be if you want an average of at least 80%? A. 90% B. 85% C. 83% D. 81% PAGE 1
3 Use the table below on the square footage of apartments for problems Apt. # Sq. Footage 109. What is the mean of the sq. footage of the apts.? A. 750 B. 800 C. 790 D What is the mode of the sq. footage of the apts.? A. 800 B. 750 C. 500 D What is the median of the sq. footage of the apts.? A. 750 B. 800 C. 500 D Use the table of average tuition costs for various Kansas colleges for problems Kansas Average College Tuition 2014 KU $9,225 KSU $7,830 Wichita $5,622 Emporia $4,368 Baker $25,200 Fort Hays State $3,374 JCCC $2,520 Mid-America $21,200 Washburn $5, What is the range of the costs of colleges listed? A. $25,200 B. $22,680 C. $21,826 D. $20, What is the mode of the costs? A. $800 B. $750 C. $500 D. $ What is the median of the costs? A. $14,287 B. $800 C. $500 D. $5655 Pittsburg State $4, The costs of private colleges is more than public schools because they have no state aid in paying their expenses. However, they often offer a greater number of scholarships to their students. Given the variety of costs shown in the table, what would be the mean cost of these colleges to the nearest dollar? A. $9971 B. $8158 C. $8,974 D. $7478 PAGE 2
4 For problems , use the line graph of Caitlin s Height from Birth to age Between which two years did the greatest amount of growth take place? A. Birth-2 B. 2-4 C. 4-6 D Reading the graph, what would be Caitlin s approximate height at age 5? A. 40 in. B. 43 in. C. 45 in. D. 48 in Use the graph to estimate what Caitlin s height might be at age 10. A. 55 in. B. 60 in. C. 65 in. D. 70 in. Use the survey results for the number of people using technology to do research in the table below for problems How many people took the survey? A. 25 B. 65 C. 66 D How many more people use cell phones compared to those using desktop or laptop computers? A. 5 B. 10 C. 15 D. 20 PAGE 3
5 Use the Venn Diagram that shows the types of food eaten at a picnic for problems How many people ate something at the picnic? A. 22 B. 26 C. 35 D How many people had at least two items? A. 11 B. 12 C. 10 D How many people had all three food items? A. 6 B. 7 C. 2 D What is the probability of landing on a factor of 4? E. A. 2/3 B. 1/2 C. 5/6 D. 1/6 Use the following box plot to answer the problems The letter C represents the: A. mode B. mean C. median D. range 126. The inter-quartile range is found by finding the difference between values corresponding to points of the box plot. A. E and D B. D and B C. E and A D. C and A 127. Each section, A to B, B to C, C to D, and D to E, represents what part of the data? A. 20% B. 25% C. 50% D. 100% PAGE 4
6 Use the tree diagram color combinations for Blue, White, and Red to find the probabilities in problems How many different ways can the colors be selected on two selections of the three colors? A. 3 B. 6 C. 8 D What is the probability of getting two of the same colors? A. 1/3 B. 1/6 C. 2/9 D. 1/ What is the probability of getting one blue and one red? A. 1/3 B. 1/6 C. 2/9 D. 1/ Use the data from the pie graph to determine the number of people in school who like alternative music if there are 300 people in the school. A. 30 B. 45 C. 35 D The circle graph below shows the degree of the central angle that shows how many students take the bus, walk, bike, or get transported to school by car. Determine the percent of students that walk to school. A. 20% B. 60% C. 11% D. 30% PAGE 5
7 133. Use the bag of marbles to determine the probability of selecting a multi-colored marble. A. 0.3 B. 0.4 C. 0.5 D Use the deck of cards shown to answer problems What is the probability of getting a heart out of the deck of cards? A. 1/4 B. 1/5 C. 1/12 D. 1/ What is the probability of getting a Queen out of the deck of cards? A. 1/4 B. 1/5 C. 1/12 D. 1/ What is the probability of getting a 10 of diamonds or hearts, or any King? A. 8/52 B. 2/13 C. 3/26 D. 1/13 Use the table showing possible sums resulting from rolling two dice to answer problems What is the probability of getting a sum of 7? A. 1/7 B. 1/3 C. 1/5 D. 1/6 F. Not given 138. What is the probability of getting a number greater than or equal to 7? A. 7/12 B. 21/32 C. 1/2 D. 3/ What is the probability of getting a multiple of three? A. 1/12 B. 1/3 C. 1/2 D. 1/ What is the probability of getting a 1? A. 1/36 B. 1/10 C. 1 D. 0 PAGE 6
8 Shade the correct answer! Example: A B C D E Name School 101. A B C D E 121. A B C D E 102. A B C D E 122. A B C D E 103. A B C D E 123. A B C D E 104. A B C D E 124. A B C D E 105. A B C D E 125. A B C D E 106. A B C D E 126. A B C D E 107. A B C D E 127. A B C D E 108. A B C D E 128. A B C D E 109. A B C D E 129. A B C D E 110. A B C D E 130. A B C D E 111. A B C D E 131. A B C D E 112. A B C D E 132. A B C D E 113. A B C D E 133. A B C D E 114. A B C D E 134. A B C D E 115. A B C D E 135. A B C D E 116. A B C D E 136. A B C D E 117. A B C D E 137. A B C D E 118. A B C D E 138. A B C D E 119. A B C D E 139. A B C D E 120. A B C D E 140. A B C D E PAGE 7
9 Shade the correct answer! Example: A B C D E ANSWER KEY OK 3/25/15 cvb Name School 101. A B C D E 121. A B C D E 102. A B C D E 122. A B C D E 103. A B C D E 123. A B C D E 104. A B C D E 124. A B C D E 105. A B C D E 125. A B C D E 106. A B C D E 126. A B C D E 107. A B C D E 127. A B C D E 108. A B C D E 128. A B C D E 109. A B C D E 129. A B C D E 110. A B C D E 130. A B C D E 111. A B C D E 131. A B C D E 112. A B C D E 132. A B C D E 113. A B C D E 133. A B C D E 114. A B C D E 134. A B C D E 115. A B C D E 135. A B C D E 116. A B C D E 136. A B C D E 117. A B C D E 137. A B C D E 118. A B C D E 138. A B C D E 119. A B C D E 139. A B C D E 120. A B C D E 140. A B C D E PAGE 8
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