The mean = The sum of all the values ÷ The number of values.
18 + 15 + 22 + 18 + 25 + 19 + 23 = 140 : Number of values = 7
Mean = 140 ÷ 7 = 20
18, 23, 10, 39, 22, 17, 16, 15 Mean = (18 + 23 + 10 + 39 + 22 + 17 + 16 + 15)/8 = 20 Lowest Number in set is 10 Highest Number in set is 39 Range = (39 - 10) = 29
mean average = sum of dataset / number of items in dataset = (14 + 18 + 13 + 15) / 4 = 60/4 = 15
- 4
18
One possibility: 5, 6, 7, 7, 7, 12, 12, 13, 14, 15, 16, 18
To calculate the mean of the data set 14, 15, 17, 18, 20, 24, and 28, first sum the values: 14 + 15 + 17 + 18 + 20 + 24 + 28 = 116. Then, divide the total by the number of values (7): 116 ÷ 7 = 16.57. Thus, the mean of the data set is approximately 16.57.
11
The mean will increase from 14 to 20. The median will increase from 12 to 15.
To find the median of the data set 11, 13, 14, 15, 18, 20, 23, 26, first, arrange the numbers in order (which they already are). Since there are eight values (an even number), the median is the average of the two middle numbers, which are 15 and 18. Thus, the median is (15 + 18) / 2 = 16.5.
To find the mean of the set (15, 22, 19, 20, 29, 18, 25, 19, 31), first sum the numbers: (15 + 22 + 19 + 20 + 29 + 18 + 25 + 19 + 31 = 208). There are 9 numbers in the set, so the mean is ( \frac{208}{9} \approx 23.11). Thus, the mean of the set is approximately (23.11).
The set of multiples of 18.
18, 23, 10, 39, 22, 17, 16, 15 Mean = (18 + 23 + 10 + 39 + 22 + 17 + 16 + 15)/8 = 20 Lowest Number in set is 10 Highest Number in set is 39 Range = (39 - 10) = 29
First put them in numerical order,12, 13, 13, 15, 15, 18.since there is an even set of numbers the median is the mean of the two middle numbers12, 13, 13, 15, 15, 18.(13+15)/2=14
Two different sets of data that each have six values and a mean of 21 could be: Set A: {18, 20, 21, 22, 23, 16} — The sum of these values is 126, and dividing by 6 gives a mean of 21. Set B: {15, 25, 20, 22, 23, 14} — This set also sums to 126, resulting in a mean of 21 when divided by 6. Both sets demonstrate that different combinations of numbers can yield the same mean.
To find the mean of the data set 12, 18, 11, 25, 38, and 22, first add all the numbers together: 12 + 18 + 11 + 25 + 38 + 22 = 126. Then, divide the total by the number of values, which is 6. Therefore, the mean is 126 ÷ 6 = 21.
mean average = sum of dataset / number of items in dataset = (14 + 18 + 13 + 15) / 4 = 60/4 = 15
i went thru the same problem i looked at the back of the book its 25