# chapter 1 Flashcards Preview

## Statistics > chapter 1 > Flashcards

Flashcards in chapter 1 Deck (18)
1
Q

Sample

A

A selection from the whole population

2
Q

Primary Data

A

Data which is collected for a specific investigation

3
Q

Standard Deviation

A

Square root of variance

4
Q

Qualitative Data

A

Data which can be organised into categories but cannot be given a numerical value

5
Q

Lower Quartile

A

The item one quarter of the way through when the data are put in order

6
Q

Continuous data

A

Data which can be measured and which can take any value within a certain range

7
Q

Discrete data

A

Data which can have only certain definite values

8
Q

Mode

A

The most common

9
Q

Median

A

The middle item when the data are in order

10
Q

Secondary data

A

Data which is already published and which may be accessed for many investigations

11
Q

Quantitative data

A

Data which can be measured or which has an exact numerical value

12
Q

Interquartile Range

A

Upper quartile - Lower quartile

13
Q

Upper quartile

A

The item three quarters of the way through when the data are put in order

14
Q

Standard deviation

A

Tells us how much the data spread out around the mean

15
Q

Mean

A

A measure of the average which uses all the data values

16
Q

Range

A

The difference between the largest and smallest data values

17
Q

Population

A

The whole group that we are interested in

18
Q

Interquartlie range

A

Tells us the spread of the middle 50% of the data values