BESC EXAM SCRIPT PREMIUM QUESTIONS AND SOLUTIONS GRADED A+

BESC EXAM SCRIPT PREMIUM QUESTIONS
AND SOLUTIONS GRADED A+

●● Which measure of central tendency is most appropriate for skewed
distributions?
Answer: median


●● When a histogram or polygon chart for a quantitative variable has
two distinct peaks, then the distribution is referred to as _____.
Answer: bimodal


●● What is the mode for the following data set?
1 2 2 2 2 2 3 3 3 3 4 4 4 5 5 5 5 6 6 7 7+
Answer: 2


●● What is the median for the following data set?
1 2 2 2 2 2 3 3 3 3 4 4 4 5 5 5 5 6 6 7 7+
Answer: 4


●● The three most common measures of central tendency are:
Answer: mean, median, mode

, ●● What is the minimum level of measurement needed to calculate the
mode?
Answer: nominal


●● What is the median for these data?
5, 1, 1, 3, 2
Answer: 2


●● Which of these measures is LEAST affected by outliers?
Answer: median


●● Which measure of central tendency is LEAST efficient?
Answer: mode


●● One visual difference between a bar chart and a histogram is that in a
histogram...
Answer: the adjacent bars touch but in a bar chart they are separate.


●● A normal distribution has a value of skewness that is _____.
Answer: near zero


●● A frequency bar graph would be most appropriate for which
measurement scales?