STATISTICAL VOCAB

Question 1

line plot

Answer 1

a graph that uses Xs above a number line to show data: line plots are useful for showing how data is grouped.

Question 2

statistical question

Answer 2

a question that can have a variety of answers and can be used to make a prediction about a larger group.

Question 3

distribution

Answer 3

show how spread out or how clustered data values are.

Question 4

mean

Answer 4

the sum of all the values divided by the number of values.

7,9,10,13,15,15,15
The mean is 12

Question 5

median

Answer 5

the middle number in a data sett when all the values are listed from least to greatest

7,9,10,13,15,15,15
The median is 13.

Question 6

mode

Answer 6

the number the appears most often in a data set.

Question 7

box plot

Answer 7

a five-number summary that includes the minimum, the lower quartile, the median,the upper, and the maximum;shown graphically next to a number line.

Question 8

lower quartile

Answer 8

the middle number of all values less than the median.

Question 9

upper quartile

Answer 9

the middle number of all values greater than the median.

Question 10

range

Answer 10

the difference between the greatest and least values in a data set.

Question 11

interquartile range (IQR)

Answer 11

the difference between the upper quartile and lower quartile.

Question 12

outlier

Answer 12

a data point far away from the other data points; it doesn’t quite fit with the rest of the data points.