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# Data Management

What is mean? the average number Step1: add all the number Step2: divide the total number by the number of groups 15,12,13,15,20,15,19 [set of data] 15 is one group 15+12+13+15+20+15+19= 109 [total #] 109 divided by 7 [number of groups] = 15.5 [the average]
What is median? the middle number Step1: put the numbers from least to greatest Step2: go to the middle of the set of data 15,12,13,15,20,15,19 [set of data] 12,13,15,15,15,19,20 [order least to greatest] middle number 15
What is mode? the most frequent number Step1: tally the number of times each number appears in the set of data Step2: the number with the most tallies is the most frequent number 15,12,13,15,20,15,19 [set of data] 12=| 13=| 15=||| 19=| 20=| 15 is the most frequent number
What is range? the difference between the lowest and biggest number Step1: find the lowest and biggest number Step2: subtract the lowest number from the biggest number 15,12,13,15,20,15,19 [set of data] lowest number: 12 biggest number: 20 20-12=8 8 is the answer
What would you do if there was no repeated number? There would be no mode so you would write "no mode" No Steps Required 15,14,12,18,30 [set of data] No Mode
What is the mean? 45,12,3,8,78,12,15 24.7 No Steps Required No Steps Required
What is the median?4,12,19,22,45,66 20.5 No Steps Required No Steps Required
What is the mode? 12,15,28,15,95,12,14,70,15 15 No Steps Required No Steps Required
What is the main rule when you do median? Put the numbers in order No Steps Required No Steps Required
What is the range? 12,14,25,28,39,78,99 87 No Steps Required No Steps Required
What is the median? 15,16,39,57,89,93,95 57 No Steps Required No Steps Required
What do you do for range? subtract the lowest number from the biggest number No Steps Required No Steps Required
What do you do if there is no middle number? You use the two middle numbers and put all the that are between them in order and choose that middle or go into decimal land Step1: take the 2 middle numbers Step2: put the smaller number from the 2 and put the numbers in order from that number to the other number Step3: find the middle in that set of data, if there is stiil no number go into decimal land 15,12,13,15,13,20,15,19 [set of data] 13,14,15 [13 and 15 are the 2 numbers from the other set of data] 14 is the middle number
What do you do if there are 2 answers for the most frequent number? You write both of the answers down No Steps Required 15,12,13,12,14,15,18 [set of data] 2 answers are 12 and 15
Created by: MUSTPASS