Mathematics, 19.12.2019 17:31 eliz10
Cara computes the mean and variance for the set 87, 46, 90, 78, and 89. she finds the mean to be 78. her steps for finding the variance are shown below. variance squared = startfraction (87 minus 78) squared + (46 minus 78) squared + (90 minus 78) squared + (78 minus 78) squared + (89 minus 78) squared over 5 endfraction variance squared = startfraction (9) squared minus (32) squared + (12) squared + 0 squared + (11) squared over 5 endfraction variance squared = startfraction 81 minus 1,024 + 144 + 0 +121 over 5 endfraction variance squared = startfraction negative 678 over 5 endfraction = negative 135.6 what is the first error cara made in computing the variance?
Answers: 1
Mathematics, 21.06.2019 15:30
Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?
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Mathematics, 21.06.2019 16:30
Ineed if you could explain and give me the answer you! this needs done
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Mathematics, 21.06.2019 20:30
The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers
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Cara computes the mean and variance for the set 87, 46, 90, 78, and 89. she finds the mean to be 78....
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