a.
experimental studies
b.
uncontrolled experimental studies
c.
not of any value
d.
observational studies
ANS: D PTS: 1 TOP: Descriptive Statistics
38. Statistical studies in which researchers control variables of interest are
a.
experimental studies
b.
control observational studies
c.
non-experimental studies
d.
observational studies
ANS: A PTS: 1 TOP: Descriptive Statistics
39. The summaries of data, which may be tabular, graphical, or numerical, are referred to as
a.
inferential statistics
b.
descriptive statistics
c.
statistical inference
d.
report generation
ANS: B PTS: 1 TOP: Descriptive Statistics
40. Statistical inference
a.
refers to the process of drawing inferences about the sample based on the characteristics of the population
b.
is the same as descriptive statistics
c.
is the process of drawing inferences about the population based on the information taken from the sample
d.
is the same as a census
ANS: C PTS: 1 TOP: Descriptive Statistics
41. The collection of all elements of interest in a particular study is
a.
the population
b.
the sampling
c.
statistical inference
d.
descriptive statistics
ANS: A PTS: 1 TOP: Descriptive Statistics
42. A portion of the population selected to represent the population is called
a.
statistical inference
b.
descriptive statistics
c.
a census
d.
a sample
ANS: D PTS: 1 TOP: Statistical Inference
43. In a sample of 800 students in a university, 240, or 30%, are Business majors. The 30% is an example of
a.
a sample
b.
a population
c.
statistical inference
d.
descriptive statistics
ANS: D PTS: 1 TOP: Descriptive Statistics
44. In a sample of 400 students in a university, 80, or 20%, are Business majors. Based on the above information, the school's paper reported that "20% of all the students at the university are Business majors." This report is an example of