The three commonly used measures of central tendency are A.mode, median, and mean.percentage, midpoint, and mean.mode, midpoint, and ratio.median,...

45.   The three commonly used measures of central tendency are

A.     mode, median, and mean.

B.     percentage, midpoint, and mean.

C.      mode, midpoint, and ratio.

D.     median, rate, and mode.

46.  T he purpose of univariate descriptive statistics is to

A.     summarize relationships between many variables.

B.     display the essential meaning of variables measured at the interval-ratio level.

C.      combine nominal and discrete variables.

D.     summarize a single variable.

47.   The most appropriate measure of central tendency for gender would be the

A.     median.

B.     mode.

C.      mean.

D.     None of the above

48.  If you subtracted the mean from each score in a distribution, squared the differences, and then added the squared differences, the sum would be

A.     zero.

B.     less than zero.

C.      a minimum.

D.     a maximum.

49.  It is possible for a variable to have

A.     one mode.

B.     many modes.

C.      no mode.

D.     All of the above