6.2. Variance of a Data Set http://www.ck12.org
TABLE6.9:(continued)
Data(x) Mean(μ) Data−Mean(x−
μ)Square of Data −
Mean(x−μ)^2∑
- What would the variance have been for question 1 had the data set represented a sample instead of a small
population? - The following data was collected. 11 15 16 12 19 17 14 18 15 10 Fill
in the chart below and calculate the variance. The data represents a small population.
TABLE6.10:
Data(x) Mean(μ) Data−Mean(x−
μ)Square of Data −
Mean(x−μ)^2∑
- What would the variance have been for question 3 had the data set represented a sample instead of a small
population? - The following data was collected. 55 54 48 52 69 60 47 66 50 61 Fill
in the chart below and calculate the variance. The data represents a small population.
TABLE6.11:
Data(x) Mean(μ) Data−Mean(x−
μ)Square of Data −
Mean(x−μ)^2