The average value of a data set is called the

1.   ?    a. mean
2.   ?    b. median
3.   ?    c. mode
4.   ?    d. range
5.   ?    e. percentile

The most frequently occurring data value in a data set is the

1.   ?    a. median
2.   ?    b. arithmetic mean
3.   ?    c. population parameter
4.   ?    d. range
5.   ?    e. mode

A measure of central location which splits the data set into two equal groups is called the

1.   ?    a. mean
2.   ?    b. mode
3.   ?    c. median
4.   ?    d. standard deviation
5.   ?    e. none of the above

The coefficient of variation is

1.   ?    the same as the variance
2.   ?    a measure of central tendency
3.   ?    a measure of absolute variability
4.   ?    a measure of relative variability

An exploratory data analysis which uses the lowest value, 25th percentile, median, 75th percentile and largest value is known as a

1.   ?    median analysis
2.   ?    box analysis
3.   ?    5 - number summary
4.   ?    none of the above

A box plot is

1.   ?    the same as an ogive
2.   ?    a frequency distribution
3.   ?    the same as a frequency polygon
4.   ?    a visual presentation of a 5 - number summary
5.   ?    none of the above

The sum of the deviation of the individual data elements from their mean is always

1.   ?    equal to zero
2.   ?    equal to one
3.   ?    negative
4.   ?    positive
5.   ?    none of the above

The interquartile range

1.   ?    is a measure of location
2.   ?    is a measure of variability
3.   ?    is always equal to the median
4.   ?    is always equal to the mode
5.   ?    none of the above

The ratio of the standard deviation to the mean (stated as a percentage) is

1.   ?    the variance
2.   ?    the range
3.   ?    the coefficient of variation
4.   ?    always greater than 1
5.   ?    none of the above

The range of the correlation coefficient is

1.   ?    a. 0 to +1
2.   ?    -1 to +1
3.   ?    -1 to infinity
4.   ?    -1 to 0
5.   ?    none of the above