Math Section2

Question 1

Mean, median, and mode are all measures of what?

Answer 1

central tendency

Question 2

What is a measure of central tendency?

Answer 2

a value that is the central position of a data set

Question 3

What is mean?

Answer 3

the average of a set of numbers

Question 4

How do you calculate mean?

Answer 4

add the numbers in a data set and divide it by the number of numbers in the data set

Question 5

What is median?

Answer 5

the middle number in a data set written from least to greatest

Question 6

How do you find the median of a data set with no single middle value?

Answer 6

average the 2 middle numbers together

Question 7

What is mode?

Answer 7

the number that appears most often in a data set

Question 8

What are the modes a data set can have?

Answer 8

no mode, one mode, or more than one mode

Question 9

What is range?

Answer 9

the difference between the largest and smallest numbers in a data set

Question 10

What is an outlier?

Answer 10

a value that is extreme, meaning it is much smaller or larger than the other numbers

Question 11

What type of data display allows us to summarize the shape of a data set?

Answer 11

a stem-and-leaf plot

Question 12

How is the data in a stem-and-leaf plot arranged?

Answer 12

by place value

Question 13

What are the stems in a stem-and-leaf plot?

Answer 13

the digits in the tens place, found on the left of the vertical line

Question 14

What are the leaves in a stem-and-leaf plot?

Answer 14

the digits in the ones place, found on the right of the vertical line

Question 15

What are frequency diagrams?

Answer 15

a number line marked with possible values or a range of values, with points indicating each value

Question 16

What do box-and-whisker plots organize data based on?

Answer 16

range and quartiles

Question 17

In a box-and-whisker plot, what does the left whisker represent?

Answer 17

the distance between the minimum value and the lower quartile

Question 18

In a box-and-whisker plot, what does the right whisker represent?

Answer 18

the distance between the max value and the upper quartile

Question 19

What represents the median in a box-and-whisker plot?

Answer 19

a vertical line

Question 20

What is the lower extreme in a data set?

Answer 20

the smallest number

Question 21

What is the upper extreme in a data set?

Answer 21

the largest number

Question 22

What is another term for lower quartile?

Answer 22

Q1

Question 23

What is another term for upper quartile?

Answer 23

Q3

Question 24

What is the lower quartile?

Answer 24

the median of the lower half of the data set (between the lower extreme and median)

Question 25

What is the upper quartile?

Answer 25

the median of the upper half of the data set (between the upper extreme and median)

Question 26

What does IQR stand for?

Answer 26

Interquartile Range

Question 27

What is IQR?

Answer 27

the difference between the lower and upper quartiles

Question 28

What is the formula to find the IQR?

Answer 28

IQR = Q3 - Q1

Question 29

What are bar graphs?

Answer 29

visual displays used to compare frequency or other aspects

Question 30

How many axes are in a bar graph?

Answer 30

2, the y-axis and x-axis

Question 31

What is a group data axis?

Answer 31

the axis at the base of the bars, based on the range of the data

Question 32

What is a frequency axis?

Answer 32

the axis that displays the frequency, found on the left/right

Question 33

What are scatterplots?

Answer 33

diagrams that show the relationship and correlation between sets of data

Question 34

What are the 3 types of correlation?

Answer 34

positive, negative, and none

Question 35

What is positive correlation?

Answer 35

as x increases, y increases

Question 36

What is negative correlation?

Answer 36

a x increases, y decreases

Question 37

What is no correlation?

Answer 37

when there is no pattern between x and y

Question 38

What is a line of best fit?

Answer 38

a line that shows the overall trend of the data set

Question 39

What is an arithmetic sequence?

Answer 39

a sequence when the numbers are added/subtracted to get the next number in the sequence

Question 40

What is a geometric sequence?

Answer 40

a sequence when the numbers are multiplied/divided to get the next number in the sequence