DAU

Question 1

Distribution is…

Answer 1

The shape of the data of the set as a whole.

Question 2

Data is…

Answer 2

Observations

Question 3

Median is…

Answer 3

The number that marks the midpoint of an ordered set of data. At least half of the values lie at above the median, and at least half lie below the median.

Question 4

Summary statistic is…

Answer 4

A single number that conveys basic, but important, information about a distribution. Examples of summary statistics include mean, median, mode, and range, etc.

Question 5

Mean is….

Answer 5

The average

Question 6

Variability

Answer 6

An indication of how widely spread or closely clustered the data value are. Range, minimum, and maximum values, and clusters in the distribution give some indication of variability. The variability of a distribution can also be measured by it’s IQR or MAD.

Question 7

Quartiles

Answer 7

One of the three points that divide a data set into four equal groups. The second quartile, Q2, is the median of the data set. The third quartile,Q3, is the median of the upper half of the data set.