A confidence interval for a median can be found by using these formulas to define positions in the set of ordered data values Suppose a data set has 30 values, and you want to find the 95 confidence interval for the median Substituting in the formulas, you get Arrange the data in order from smallest to largest, and then select the 10th and 21st values of the data array hence, X 10 median X 21 Using the previous information, find the 90 confidence interval for the median for the given data n 1 2 L n U 1 U Vn a 2 n 2 (round up)

Question: A confidence interval for a median can be found by using these formulas to define positions in the set of ordered data values. Suppose a

A confidence interval for a median can be found by using these formulas

n+1 2 L = n - U+1 U = + Vn a/2

to define positions in the set of ordered data values. Suppose a data set has 30 values, and you want to find the 95% confidence interval for the median. Substituting in the formulas, you get

n 2 (round up)

Arrange the data in order from smallest to largest, and then select the 10th and 21st values of the data array; hence, X₁₀ 21.
Using the previous information, find the 90% confidence interval for the median for the given data.

n+1 2 L = n - U+1 U = + Vn a/2 n 2 (round up)

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