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 prediction about a larger group

Question 3

distribution

Answer 3

shows how spread out or how clustered data values are

Question 4

median

Answer 4

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

Question 5

mean

Answer 5

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

Question 6

mode

Answer 6

the number that 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 quartile, 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 greatestand 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