Unit 2 Test Study guide

Question 1

Frequency Distribution

Answer 1

the pattern of frequencies of a variable.

Question 2

Class

Answer 2

grouping of values

Question 3

Class width formula

Answer 3

1. Find the range
2. add 1
3. divide by class

Question 4

Frequency

Answer 4

The amount of times an event occurs in a study

Question 5

Boundaries

Answer 5

The sum and difference of one place lower than the class limit

Question 6

Midpoint

Answer 6

The point in the middle of a class

Question 7

Cumulative Frequency

Answer 7

The running total of frequencies

Question 8

The three types of frequency distributions

Answer 8

Categorical, Grouped, and Ungrouped

Question 9

Grouped frequency graph types

Answer 9

Histogram, Frequency polygon, and Ogive

Question 10

Two other graphs are…

Answer 10

Time series and Pareto Chart

Question 11

Which graph has frequency on the y-axis, and boundaries on the x-axis

Answer 11

Histogram(Bar Graph)

Question 12

Which graph has frequencies on the y-axis and midpoints on the x-axis

Answer 12

Frequency Polygon

Question 13

Which graph has Cumulative frequency on the y-axis and boundaries on the x-axis

Answer 13

Ogive

Question 14

What kind of graph shows nominal data

Answer 14

Pareto Graph

Question 15

True or False: On Pareto graph, the first bar on the graph touches the y axis

Answer 15

True

Question 16

True or false: When the class width is a decimal you round up to the next whole number

Answer 16

True

Question 17

Boundary formula

Answer 17

Lower limit - 0.5
Upper limit+ 0.5

Question 18

Midpoint formula

Answer 18

Lower limit + Upper limit / 2

Question 19

How do you find Cumulative Frequency

Answer 19

adding each frequency to the previous one

Question 20

What graph displays movement through time?

Answer 20

Time series graph