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1 Algebra 1 EOC (MAFS) Quiz Statistics and the Number System - (MAFS.912.S-ID.1.1) Data Plots, (MAFS.912.S-ID.1.2) Data Distribution, (MAFS.912.S-ID.1.3) Interpret Differences 1) Student Name: Teacher Name: Ms. Levenson Date: Score: Jenny recorded the weight of 5 dogs. Each dog weighed a different amount. She recorded the results on a box plot. Which conclusion can be made about the interquartile range of Jenny s box plot? A) All the dogs weighed 15 pounds or less. C) All the dogs weighed between 5 and 15 pounds. D) The middle 50% of the dogs weighed between 5 and 15 pounds. The interquartile range was higher than it should be because of the dog that weighed 20 pounds. 1/8

2 2) Temperature Temperature ( F) Which boxplot correctly displays the data in the set? A) C) D) 2/8

3 3) Which data set is NOT represented by the box plot shown? A) {12, 5, 10, 7, 8, 14, 7, 10, 4, 13, 9} C) {14, 5, 13, 8, 8, 10, 9, 11, 12, 7, 4} {8, 12, 7, 8, 4, 9, 10, 12, 6, 14, 13} D) {6, 4, 7, 9, 8, 8, 12, 10, 14, 13, 13} 3/8

4 4) Pairs of Shoes in Closets Girls Boys Jeffrey surveys the 13 girls and 13 boys in his class to find out how many pairs of shoes they have in their closets. Which statement is true? A) The value of Q3 for the boys is greater than the value of Q3 for the girls. The mean number of shoes for the boys is greater than the mean number of shoes for the girls. C) D) The mean number of shoes for the boys is less then the mean number of shoes for the girls. The median number of shoes for the boys is greater than the median number of shoes for the girls. 5) Mr. Martin was comparing two random samples of students test scores from his Algebra III 1st and 3rd block classes: Test scores from 1st block: 92,84,85,77,60,92,68,88,76,89,94,56,72,45,66; Mean: 76.3 Standard deviation: 14.3 Test scores from 3rd block: 72,77,84,79,66,74,88,72,73,64,82,85,74,74,97; Mean: 77.4 Standard deviation: 8.34 What can Mr. Martin most accurately conclude between the overall class test scores of 1st and 3rd blocks? A) The students in both classes performed the same on the test. 1st blocks scores had a higher standard deviation, so as a class overall performed much better than 3rd blocks. C) D) 1st blocks scores are more closely grouped around the average, therefore they had better scores than 3rd block. 3rd block students tend to have a slightly better grasp of the material since the mean is a little higher and the dispersion from the mean is less than 1st blocks. 4/8

5 6) Plant Plant Plant Plant Plant During which year were the mean and median the same value? A) 2005 C) D) ) Which measure of central tendency is MOST EASILY affected by outliers? A) mean C) mode median D) IQR 8) Test 1: 86 Test 2: 82 Test 3: 90 Test 4: 87 mean: 86.25, standard deviation: Jill is calculating the standard deviation for her test grades. Mrs. Brown tells her that she did not take into account the curve on any of her grades and she needs to add 5 points to each grade. What is her new standard deviation? A) C) D) ) Plant Plant Plant Plant Plant A gardener recorded how many tomatoes 5 plants produced each year. Which year had the LARGEST interquartile range of tomatoes produced? A) 2005 C) D) /8

6 10) Forty-five people were asked about how many miles they walked in one week. The results are shown in the graph. How does the median number of miles walked for boys compare with the median number of miles walked for girls? A) The median for the boys is 1 mile less than the girls The median for the boys is 1 mile more than the girls. C) The median for the boys is 1.4 miles more than the girls. D) The median for the boys is 1.4 miles less than the girls. 11) Day Temperature ( F) The temperature for 5 days is shown in the table. If on the 6th day the temperature is 83, how will this change the overall mean temperature? A) increase by 1 C) increase by 3 increase by 2 D) increase by 4 6/8

7 12) Lucy found the average of all of her grades so far in high school. She left off the the 70 that she made in Chemistry. How will that change the box-and-whisker plot? A) The mean will increases. C) There will be no change. The range will increase. D) The lower quartile will decrease. 13) 3, 7, 8, 2, 4, 3, 4, 6, 5, 4 What is the mode in the data set? A) 3 C) 6 4 D) 7 14) You did a survey on favorite ice cream flavor and you want to display the results of the survey so you can easily COMPARE the flavors to each other. Which type of graph would be the best way to display the results of your survey? A) Bar Graph C) Scatter Plot Line Graph D) Coordinate Graph 7/8

8 15) SAT Scores Group 1 SAT Scores Group 2 SAT Scores Group 3 SAT Scores Group The SAT scores of 4 groups of 10 students are shown. Which group has the greatest range? A) Group 1 C) Group 3 Group 2 D) Group 4 8/8

1. 2. 3. 4. Find the mean and median. 5. 1, 2, 87 6. 3, 2, 1, 10. Bellwork 3-23-15 Simplify each expression.

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