Читать книгу Statistics and Probability with Applications for Engineers and Scientists Using MINITAB, R and JMP - Bhisham C. Gupta, Irwin Guttman - Страница 70

1 Step 1. Write the data in an ascending order and rank them from 1 to 11, since .Observations in ascending order2426282930303233343536Ranks1234567891011

2 Step 2. Rank of the median .

3 Step 3. Find the value corresponding to rank 6, which in this case is equal to 30. Thus, the median alignment pin length is mm. This means that at most 50% alignment pins in the sample are of length less than or equal to 30 and at the most 50% are of length greater than or equal to 30 mm.

Example 2.5.4 (Sales data) For the case of even (i.e., ), the following data describe the sales (in thousands of dollars) for 16 randomly selected sales personnel distributed throughout the United States:

10 8 15 12 17 7 20 19 22 25 16 15 18 250 300 12

Find the median sale of these individuals.