Calculation:
Range:
It is the difference between the maximum and the minimum values is termed as range.
Range
Here the maximum value is 180 and the minimum value is 120.
Range
Thus, the range is
Inter quartile range:
In contrast to the range, which measures only differences between the extremes, the inter quartile range (also called mid spread) is the difference between the third quartile and the first quartile. Thus, it measures the variation in the middle 50 percent ofjthe data and unlike the range it is not affected by extreme values.
Substitute
Thus, the IQR for the cost of compact refrigerators is
A study in Sweden looked at former elite soccer players, people who had played soccer but not at the elite level, and people of the same age who did not play soccer. Here is a two-way table that classifies these individuals by whether or not they had arthritis of the hip or knee by their mid-fifties:
What percent of the elite soccer players developed arthritis? What percent of those who got arthritis were elite soccer players?
The lengths of the products produced in a production process are controlled. The standard deviation is 0.45 mm. A quality control specialist keeps checking over 40 units randomly every morning. Average length in one day 35.62mm. when it happens. Which of the following is the confidence interval for the mean population mean at
A)
B)
C)
D)
E)