# STATISTICS and PROBABILITY GRADE 6

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1 Kansas City Area Teachers of Mathematics 2016 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 None of the above. Student Name Student Number School

2 101. Six candidates place their names in a hat. Two are Democrats. Four are Republicans. One name is randomly drawn from the hat. What is the probability of not selecting a Republican? A. 1/4 B. 1/6 C. 1/2 D. 1/3 E. None of the above 102. A regular six-sided die is tossed. What is the probability of getting a factor of 24? A. 1/6 B. 1/3 C. 2/3 D. 80% E. None of the above 103. A number is chosen randomly between 1 and 10. What is the probability of selecting a multiple of 3 or a multiple of 4? A. 20% B. 30% C. 50% D. 60% E. None of the above 104. Five times a quarter is flipped. Heads is up each time. What is the probability that heads will be up when it is flipped the sixth time? A. 1/6 B. 1/3 C. 1/2 D. 83.3% E. None of the above During an experiment 4 coins were tossed once. Use this to answer questions # How many outcomes will be in the sample space for this experiment? A. 4 B. 8 C. 12 D. 16 E. None of the above 106. What is the probability of tossing either 4 heads or 4 tails? A. 1/16 B. 1/8 C. 1/2 D. 100% E. None of the above 107. A math class has 24 students. Each student tosses three coins once. How many students would you expect to toss at least 2 heads? A. 8 B. 9 C. 12 D. 24 E. None of the above PAGE 1

3 Use the temperature data for Kansas City for problems # From February 14 23, 2016 the high temperature in Kansas City was: 52 o, 55 o, 48 o, 63 o, 76 o, 72 o, 74 o, 56 o, 51 o and 52 o 108. To the nearest tenth of a degree, what is the mean of this data? A B C D E. None of the above 109. What is the median of this data? A. 76 B. 72 C. 55 D E. None of the above 110. What is the interquartile range for this data? A. 20 B. 52 C. 70 D. 11 E. None of the above 111. You were calculating your grade before your last test of the quarter. Your first 4 tests were: 76%, 82%, 68%, and 92%. What minimum test score would you need on your 5 th test if you want an average of at least 80%? A. 88% B. 85% C. 82% D. 91% E. None of the above A bag contains 4 red marbles, 5 green marbles, and 3 blue marbles. Use this information to answer problems # A marble is drawn, replaced and then a second marble is drawn. What is the probability that a blue marble is drawn and then a red marble is drawn? A. 5/8 B. 1/4 C. 1/12 D. 7/144 E. None of the above 113. A marble is drawn and NOT replaced. Then a second marble is drawn. What is the probability that both marbles are blue? A. 3/72 B. 5/12 C. 1/22 D. 6/24 E. None of the above 114. A marble is drawn and NOT replaced. Then a second marble is drawn. What is the probability that the first marble drawn is red and the second is green? A. 10/72 B. 5/36 C. 1/22 D. 5/33 E. None of the above 115. A marble is drawn and NOT replaced. Then a second marble is drawn. What is the probability the first marble drawn is NOT green, and the second marble is green? A. 12/23 B. 35/132 C. 12/132 D. 12/144 E. None of the above PAGE 2

4 For problems # , use the line graph of Caitlin s Height from Birth to age Between which two years did the least amount of growth take place? A. Birth-2 B. 2-4 C. 4-6 D. 6-8 E. None of the above 117. Reading the graph, what would be Caitlin s approximate height at age 1? A. 15 in. B in. C. 19 in. D. 28 in. E. None of the above 118. Use the graph to estimate what Caitlin s height might be at age 9. A. 45 in. B. 50 in. C. 55 in. D. 60 in. E. None of the above Use the survey results for the number of people using technology to do research in the table below for problems How many people used laptops, cell phones, or I-Pads/Tablets? A. 50 B. 66 C. 65 D. 60 E. None of the above 120. How many more people use laptops or I-Pads/tablets compared to cell phones? A. 5 B. 10 C. 15 D. 20 E. Not given PAGE 3

5 Use the Venn Diagram that shows sports played by students taking a survey. Use for problems # How many people were surveyed? A. 68 B. 83 C. 100 D. 102 E. None of the above 122. How many people had exactly two sports? A. 14 B. 29 C. 30 D. 44 E. None of the above 123. How many people did not ski, play volleyball, or play soccer? A. 0 B. 20 C. 19 D. 15 E. None of the above 124. What is the probability of landing on a factor of 12? E. A. 2/3 B. 1/2 C. 5/6 D. 1 E. None of the above Use the following box plot on test scores to answer the problems # What is the range of test scores? A. 35 B. 20 C. 45 D. 65 E. None of the above 126. Fifty percent of the students scored between which 2 scores? A. 65 and 70 B. 70 and 80 C. 80 and 90 D. 70 and 90 E. None of the above 127. Eighty percent represents which data term? A. mean B. median C. mode D. range E. None of the above PAGE 4

6 Use the tree diagram for combinations of ice cream cones to find the information in problems # How many different ways can you select a cone with one scoop of ice cream? A. 4 B. 6 C. 8 D. 10 E. None of the above 129. What is the probability of choosing vanilla or chocolate? A. 1/2 B. 1/3 C. 1/4 D. 1/8 E. None of the above 130. What is the probability of choosing a waffle cone with strawberry ice cream? A. 1/2 B. 1/3 C. 1/4 D. 1/8 E. None of the above 131. Use the data from the pie graph to determine the number of people in school who like country or rock music if there are 500 people in the school. A. 300 B. 175 C. 350 D. 125 E. None of the above 132. 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 take the bus to school. A. 20% B. 40% C. 60% D. 80% E. None of the above 133. Use the bag of marbles to determine the probability of selecting a solid colored marble. A. 0.3 B. 0.4 C. 0.6 D E. None of the above PAGE 5

7 Use the standard deck of cards shown to answer problems # How many cards are in a standard deck (see figure)? A. 13 B. 26 C. 50 D. 52 E. None of the above 135. What is the probability of getting a Jack, a Queen, or a King out of the deck of cards? A B C D E. None of the above 136. What is the probability of getting an Ace of Diamonds? A. 1/13 B. 1/12 C. 1/48 D. 1/50 E. None of the above Use the table showing possible sums resulting from rolling two dice to answer problems # What is the probability of getting a sum of less than 7? A. 7/12 B. 5/12 C. 23/36 D. 1/2 E. None of the above 138. What is the probability of getting an odd sum that is greater than or equal to 7? A. 8/15 B. 1/2 C. 4/9 D. 1/3 E. None of the above 139. What is the probability of getting a multiple of four? A. 5/18 B. 1/3 C. 1/2 D. 1/4 E. None of the above 140. What is the probability of getting a factor of 12? A. 5/18 B. 1/3 C. 1/2 D. 1/4 E. None of the above 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 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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Slide 1 / 241 Slide 2 / 241 Algebra II Probability and Statistics 2016-01-15 www.njctl.org Table of Contents click on the topic to go to that section Slide 3 / 241 Sets Independence and Conditional Probability

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### PROBABILITY. Example 1 The probability of choosing a heart from a deck of cards is given by

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