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Flashcards in Statistics Deck (11)
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1

What is discrete data ?
Can you give some examples?

Data that is whole numbers and cannot be split up

Shoe size
Number of something

2

What is continuous data and can you give some examples?

Measurements at all points including decimals

Height (150.7cm)
Distance

3

What is class width ?

The difference between the lower and upper class boundary

4

What is the midpoint of the class ?

Middle between beginning and end of class

5

How do you work out IQR ?

IQR=UQ-LQ

6

What do the question for frequency density ?

Frequency divided by class width

7

How do you work out frequency ?

Frequency density X class width

8

On a histogram what goes up the side and what goes along the bottom ?

Bottom = class width
Up the side = frequency density

Each bar represents frequency

9

What goes along the bottom and up the side of a cumulative frequency graph ?

Bottom = length/class width
Up the side = cumulative frequency


The curve should form an ā€œsā€ shape or be a curve of some degree or go flat at a point

10

What do you discuss when comparing box plots ?

Median
Inter quartile range
Full range between LQ and UQ (bigger range = less consistent)

11

What is a four point moving average ?

You add up four quarters and divide by four and continue along the quarters knocking one off each time