Which of the following correctly describes the nature of discrete quantitative variables?
a. They are characteristics possessed by persons or objects, called elementary units, in which we are interested.
b. They can assume values only at specific points on a scale of values, with inevitable gaps between successive observations
c. When dealing with such variables, we can count all possible observations and, with some exceptions, that count leads to a finite result.
d. Is correctly described by they are characteristics possessed by persons or objects, called elementary units, in which we are interested and when dealing with such variables, we can count all possible observations and, with some exceptions, that count leads to a finite result..
e. All of these.
Question 2
Which of the following is a correct interpretation of the null hypothesis for analysis of variance for one factor?
a. There is no difference between the mean values of the random variable at the various levels of the test factor.
b. The factor being tested had no effect on the random variable x.
c. There is no variance amongst the mean values of x for each of the different factor levels.
d. All of the above.
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