Author Question: Tchebysheff's Theorem states that the percentage of measurements in a data set that fall within ... (Read 88 times)

lindiwe · **on:** Jul 24, 2018

Tchebysheff's Theorem states that the percentage of measurements in a data set that fall within three standard deviations of their mean is:
a. 75
b. 68
c. 16
d. at least 89
e. at most 80

Question 2

Which of the following statements is false?
a. When comparing two populations, we need two samples, one from each population.
b. If the same set of sources or related sets are used to obtain the data representing two populations, we have dependent samples.
c. If two unrelated sets of sources are used to obtain the data representing two populations, one set from each population, we have independent samples.
d. None of the above