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What is the problem of random sampling?
With random sampling, you are hoping to get a representative sample of a whole, however statistically you could get a sample that is very different from the whole it was selected from. The larger the sample proportion of the whole, the better your sample will be. For example, a sample of 10 out of 100 is not as good as 20 out of 100. The bigger the sample the closer to the actual whole average you will get.
What is the median in 8 8 10 10 10 14 16 20 25 39?
10 numbers in the sample. Middle numbers are 10 and 14. Then the median is (10+14)/2=12
What is the density of 20g of a sample that has 10 ml of a volume?
20/10 g/cm^3 =2 g/cm^3
Can the median of a sample be a negative number?
yes, for instance if you have numbers: -15 -12 -10 -9 -5, then the median would me -10
What is the median of 10 8 9 6 5 7 7 9 10 6 9 3?
Sample size: 12 Sorted sample: 3, 5, 6, 6, 7, 7, 8, 9, 9, 9, 10, 10 Middle numbers: 7, 8 Average of middle numbers, known as median: 7.5
