Data About Us

Question 1

attribute

Answer 1

a characteristic or feature about a person or object.

Question 2

distribution

Answer 2

the shape of the data set as a whole

Question 3

frequency table

Answer 3

a frequency table shows the number of times a value shows up in a data chart.

Question 4

data

Answer 4

values or obseravtions

Question 5

line plot

Answer 5

a line plot is a graph that shows data values on a number line using x es or other marks.

Question 6

cluster

Answer 6

when the data groups are close together

Question 7

gaps

Answer 7

places where there are no data marks

Question 8

mode

Answer 8

the most frequent value in a table.

Question 9

range

Answer 9

the difference between the maximum and minimum value.

Question 10

median

Answer 10

the number tht marks the midpoint of an ordered pair of data. at least half of those values lie at or above the median, and at least half lie below the median

Question 11

summary sttistic

Answer 11

a single number that convEys basic, but important, information about a distribution. examples of summary statistics include the mean, median, mode, range, etc.

Question 12

Ordered-value bar graph

Answer 12

You can use an ordered-value bar graph to find the mean of a data set.

Question 13

Mean

Answer 13

Average. Add up all the numbers then divide but he number of numbers.

Question 14

variability

Answer 14

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 its IQR or MAD.

Question 15

quartiles

Answer 15

one of the three points that divide a dats set into four equal groups. the second quartile, Q2, is the median of the data set. the first quartile, Q1, is the median of the lower half of the data set. the third quartile, Q3, is the median of the upper half of the data set.