"Radon: The Problem No One Wants to Face" is the title of an article appearing in Consumer Reports. Radon is a gas emitted from the ground that can collect in houses and buildings. At certain levels it can cause lung cancer. Radon concentrations are measured in picocuries per liter (pCi/L). A radon level of 4 pCi/L is considered "acceptable." Radon levels in a house vary from week to week. In one house, a sample of 8 weeks had the following readings for radon level (in pCi/L).
1.9 | 2 | 5.7 | 4.6 | 1.9 | 9 | 3.9 | 6.9 |
(a) Find the mean, median, and mode. (Round your answers to two decimal places.)
mean | |
median | |
mode |
(b) Find the sample standard deviation, coefficient of variation,
and range. (Round your answers to two decimal places.)
s | |
CV | % |
range |
Get Answers For Free
Most questions answered within 1 hours.