BUAL 2600 - Exam 2 Questions and
Answers
Measures Central Tendency - Answer-Mean, Median, Mode
Measures of Variation - Answer-STD Deviation & Variance; Range & IQR
Measures of Position - Answer-Quartiles, Percentiles, Z ‐Scores
Central Tendency - Answer-A measure of central tendency represents the center or middle of the data
Population Parameter - Answer-a number calculated from all the population measurements that
describes some aspect of the population
Population Mean (μ) - Answer-is average of the population measurements and most of the time is
unknown
Sample Statistic - Answer-a number calculated using the sample measurements that describes some
aspect of the sample
, Sample Mean - Answer-(𝑥̅ or 𝑎𝑛𝑦 𝑣𝑎𝑟𝑖𝑎𝑏𝑙𝑒 𝑛𝑎𝑚𝑒) is the average of the sample data
Median - Answer-The value of the middle point of the ordered measurements.
For the Median data _________ in numerical order. - Answer-MUST BE
The mode measures what type of data? - Answer--Qualitative data
-It is the ONLY Central tendency measure for qualitative data
Mode - Answer-The most frequent value for qualitative categories OR quantitative single values
Outliers - Answer--are measurements that are very different from other measurements
-either much larger or much smaller than most of the other measurements
What type of outliers cause the data to be RIGHT SKEWED? - Answer-Outliers that are much larger than
majority of the other data points
What type of outliers cause the date to be LEFT SKEWED? - Answer-Outliers that are much smaller than
most of the other data points
How do you find the mean? - Answer-
How do you find the mode? - Answer-
How do you find the median? - Answer-
Answers
Measures Central Tendency - Answer-Mean, Median, Mode
Measures of Variation - Answer-STD Deviation & Variance; Range & IQR
Measures of Position - Answer-Quartiles, Percentiles, Z ‐Scores
Central Tendency - Answer-A measure of central tendency represents the center or middle of the data
Population Parameter - Answer-a number calculated from all the population measurements that
describes some aspect of the population
Population Mean (μ) - Answer-is average of the population measurements and most of the time is
unknown
Sample Statistic - Answer-a number calculated using the sample measurements that describes some
aspect of the sample
, Sample Mean - Answer-(𝑥̅ or 𝑎𝑛𝑦 𝑣𝑎𝑟𝑖𝑎𝑏𝑙𝑒 𝑛𝑎𝑚𝑒) is the average of the sample data
Median - Answer-The value of the middle point of the ordered measurements.
For the Median data _________ in numerical order. - Answer-MUST BE
The mode measures what type of data? - Answer--Qualitative data
-It is the ONLY Central tendency measure for qualitative data
Mode - Answer-The most frequent value for qualitative categories OR quantitative single values
Outliers - Answer--are measurements that are very different from other measurements
-either much larger or much smaller than most of the other measurements
What type of outliers cause the data to be RIGHT SKEWED? - Answer-Outliers that are much larger than
majority of the other data points
What type of outliers cause the date to be LEFT SKEWED? - Answer-Outliers that are much smaller than
most of the other data points
How do you find the mean? - Answer-
How do you find the mode? - Answer-
How do you find the median? - Answer-
