Organizing and Displaying Data

Question 1

What are (4) ways to Organize Data?

Answer 1

Rank Order Distribution
Frequency Distribution
Grouped Frequency

Question 2

What are (3) ways to Display Data?

Answer 2

Histogram
Simple Frequency Polygon
Cumulative Frequency Polygon

Question 3

What is Rank Order Distribution?

Answer 3

Order listing of a single column from highest to lowest.

Question 4

How do you find the Range?

Answer 4

Highest number value - Lowest number value

Range= Max - Min

Question 5

What does “N” stand for?

Answer 5

Total number of observations

Question 6

Rank Order Distribution is good for what type of data?

Answer 6

Small amounts of Discrete Data

Question 7

***Rank Distribution Example Pg. 21

Answer 7

…

Question 8

What is the Frequency (Simple Frequency Distribution)?

Answer 8

Frequency “f” is how many times the number of (X) was done

Question 9

Frequency is good for what type of data?

Answer 9

Large numbers of Discrete variables (integers)

Question 10

***Frequency ( Simple Frequency Distribution) Pg. 22

Answer 10

…

Question 11

If you add up the Frequency “f” row, what will that equal?

Answer 11

(N), complete total of observers. Number of #’s in the (X) row is no longer significant to the total number of people if “f” is present.

Question 12

What is Grouped Frequency Distribution?

Answer 12

Intervals of measurements ( or whatever) that do not contain the true measurement. Scores are given based on rounding.

Question 13

When should a Grouped Frequency be used? &

What is the ideal number of groups?

Answer 13

When should you use? (N) & Range is greater than 20

Ideal number of groups? 15

Question 14

How do you calculate interval size “i” ?

Answer 14

Interval Size =  \_\_\_\_\_Range \_\_\_\_\_
                          # of bars on graph
                               (usually 15)

Question 15

What is the difference between Real and Apparent Limits?

Answer 15

Real is a very precise score (114.6)

Apparent are assumed intervals where a real score may be placed ( 114.5-119.49)

Question 16

What are (3) ways you can display data?

Answer 16

Histogram “Bar Graph”
Frequency Polygon (Histogram in a line graph)
Cumulative Frequency Polygon

Question 17

What do Cumulative Frequency Polygon graphs plot?

Answer 17

Number of subjects who score AT OR BELOW a given score

Question 18

How would you find the Cumulative Frequency?

Answer 18

Starting with the lowest frequency, it will equal the first cumulative frequency.
From there… add that cumulative frequency to the next frequency, which will then become the next cumulative frequency, and so on…