85
The median and mode are both 82. The mean is 84.6
90 divided by 9 = 1090 - 9 = 81 = 9 x 988 - 81 = 79 times with 7 remaining
there is no mode. A mode is a sequence of numbers that have a pair: EXAMPLE: 21 13 54 77 13 90 65 77 3 88 21 the mode would be 21 13 and 77 because they were repeated in the sequence.
88 x 81= 792
(79, 81, 82, 91, 93, 95, 95) The mean is 88 The mode is 95 The median is 91
82.83
72 73 79 75 76 81 81 85 88
85
69, 78, 79, 88, 88, 88, 92, 93, 95, 98, 100 The mean is 88. The mode is 88. The range is 31.
The median and mode are both 82. The mean is 84.6
90 divided by 9 = 1090 - 9 = 81 = 9 x 988 - 81 = 79 times with 7 remaining
79-88 = -9
there is no mode. A mode is a sequence of numbers that have a pair: EXAMPLE: 21 13 54 77 13 90 65 77 3 88 21 the mode would be 21 13 and 77 because they were repeated in the sequence.
The median is the middle value when the numbers are arranged in numerical order. In this case, the middle two numbers are 88 and 92, so the median is (88 + 92) / 2 = 90. The mode is the number that appears most frequently, which is 88 in this dataset. The mean is the average of all the numbers, calculated by adding them up and dividing by the total count. In this case, the mean is (95 + 88 + 79 + 92 + 78 + 88 + 93 + 100 + 69 + 98) / 10 = 88.2.
88 x 81= 792
meanAdd up the numbers and divide by how many there are: 87+75+89+81+90+73+85+96+65+92+78+79+83+85+79+90+86+72+74+88+81+85 = 1813There are 22 numbers.⇒ mean = 1813 ÷ 22= 829/22≈ 82.41medianSort the numbers into order; the median is the middle number (if an odd number of numbers) or the mean of the middle two (if an even number of numbers): Sorted: 65, 72, 73, 74, 75, 78, 79, 79, 81, 81, 83, 85, 85, 85, 86, 87, 88, 89, 90, 90, 92, 96There are 22, so the median is the mean of the middle two which are the 11th (83) and 12th (85) numbers:⇒ median = (83+85) ÷2= 84modeThe number which appears the most often. Having sorted the list for the median, it can be seen that the one with the highest frequency appears three times: ⇒ mode = 85