Chapter 2.2

Question 1

correlational coefficient

Answer 1

a line of best fit that shows is a data set is positive or negative

Question 2

linear regression

Answer 2

A best fit line is calculated with a mathematical technique

Question 3

dependent

Answer 3

he measured quantity that responds to a change in another quantity.

Question 4

error

Answer 4

the difference between a measurement and its accepted value

Question 5

independent

Answer 5

quantity in an experiment that is changed by design to see how another quantity responds

Question 6

slope

Answer 6

the rate of change as a y-to-x value ratio.

Question 7

average

Answer 7

calculated by adding all values and dividing by the number of values.

Question 8

standard deviation

Answer 8

The difference between the mean and the spread of the data in a graph

Question 9

pie graph

Answer 9

a good way to show the relative proportions of individual categories in relation to a whole.

Question 10

bar graph

Answer 10

represent small sets of data because the size of each data point is represented with height.

Question 11

error bars

Answer 11

placed on each data point to indicate the error of the point.

Question 12

box & whiskers plot

Answer 12

represent uncertainty when the data sets are too large to plot every point.

Question 13

frequency

Answer 13

combines many points into a single bin to help smooth out variations in data.

Question 14

standard error

Answer 14

Error in the average of a set of measurements