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Assessment for Day 1, Day 2, Day 3 In order to compare the data, you have to find all the values first! MEAN Add up the 5 numbers and divide by 5. 3+6+6+9+11=35 35 / 5 =7 So, MEAN = 7 MEDIAN MODE RANGE Place the numbers in order and find the middle number. The number that shows up the most often. The difference between the biggest number and the smallest number. The numbers are already in order. 3,6,6,9,11 The # in the middle is 6. So, MEDIAN = 6 The number that shows up the most is 6. So, MODE = 6 Subtract the smallest # from the biggest #. 11 - 3 = 8 So, RANGE = 8 Choice “A” Choice “B” Choice “C” Choice “D” 7 > 8 6 > 7 6 = 7 7 > 6 NO!! NO!! YES!! NO!! To PREDICT means to ESTIMATE. Step 1: Rewrite the table. “Day” is the x-values and “Bacteria” the y-values. What pattern do you find in the DAY column? Bacteria data is collected every day! What pattern do you find in the BACTERIA column? Correct! Bacteria increases by almost 4 times every day! Now follow the pattern until you get to the 6th day. I know….. 16 * 4 is NOT 62 and 62 * 4 is NOT 250. We are estimating, remember? So, you can predict that on the 6th day, 4000 bacteria will be present. Choice C is the correct answer! = 13 = 53 = 29 = 13 = -11 Which one of these answers is equal to the problem? Strategy: Think about your FAVORITE number. (DO NOT USE 0 OR 1) You are going to substitute your favorite number in place of all the Xs that you see in the problem and the answer choices. My favorite number is 5. This is the number that I will substitute in place of X. PROBLEM 3(X+2)-4(X-3) 3(5+2)-4(5-3) 3(7) - 4(2) 21 - 8 = 13 Choice “A” 7X + 18 7*X + 18 7 *5 + 18 35 + 18 = 53 Choice “B” 7X - 6 7* 5 - 6 35 - 6 = 29 Choice “C” -X + 18 -1* 5 + 18 -5 + 18 = 13 Choice “D” -X - 6 -1* 5 - 6 -5 - 6 = -11 **Choice “C” matches!! Even though C is the answer, Always check all of the answers to make sure you are 100% right.** = -18 = -14 = -18 = 56 = 52 Which one of these answers is equal to the problem? Strategy: Think about your FAVORITE number. (DO NOT USE 0 OR 1) You are going to substitute your favorite number in place of all the Xs that you see in the problem and the answer choices. My favorite number is 5. This is the number that I will substitute in place of X. PROBLEM Choice “A” Choice “B” Choice “C” Choice “D” 3m + 4 – 7 m - 2 -4m + 6 -4m + 2 10m + 6 10m + 2 3(5)+4 - 7(5 ) -2 -4*m + 6 -4*m + 2 10*m + 6 10*m + 2 15 + 4 – 35 - 2 -4 *5 + 6 -4 *5 + 2 10* 5 + 6 10* 5 + 2 19 – 35 -2 -20 + 6 -20 + 2 50 + 6 50 + 2 -16 - 2 = -14 = -18 = 56 = 52 = - 18 **Choice “B” matches!! Even though B is the answer, Always check all of the answers to make sure you are 100% right.** He has $25 out of the $120 that he needs. 25 out of 120 that means that you divide 25 by 120. 25 / 120 = 0.208333333 Do any of the answers match 0.2083333? NO!! Move the decimal 2 spaces to the right! You get 20.83% and the closest answer is “B”.