CHAP 1: CALUCULATING AND PRESENTING DATA

Question 1

(In terms of data) DEFINE qualitative.

Answer 1

Measured by qualities/Descriptive of object rather than number.

Question 2

(In terms of data) DEFINE quantitative.

Answer 2

Is able to be measured numerically.

Question 3

(In terms of data) DEFINE continuous.

Answer 3

Contains decimals and is in a specific measurement.

Question 4

(In terms of data) DEFINE discrete.

Answer 4

Is a whole number.

Question 5

(In terms of data) DEFINE categorical.

Answer 5

Is not numerical and has categories.

Question 6

(In terms of data) DEFINE nominal.

Answer 6

Data that cannot be ordered.

Question 7

(In terms of data) DEFINE ordinal.

Answer 7

Data that can be ordered.

Question 8

(In terms of data) DEFINE bias.

Answer 8

An outlying variable within data.

Question 9

(In terms of data) DEFINE frequency.

Answer 9

The number of times the specific data occurs.

Question 10

(In terms of data) DEFINE distribution table.

Answer 10

Summarised values and their frequencies in a table.

Question 11

(In terms of data) DEFINE class centre.

Answer 11

The addition of the ranges in grouped data (highest + lowest no.) divided by 2.

Question 12

(In terms of data) DEFINE grouped data.

Answer 12

Bundled data shown as a range. (Even amount of data over all groups).

Question 13

(In terms of data) DEFINE mode.

Answer 13

The most frequent number in a set of data.

Question 14

(In terms of data) DEFINE mean.

Answer 14

The average of all the data combined.

Question 15

(In terms of data) DEFINE median.

Answer 15

Ordered datas middle number.

Question 16

(In terms of data) DEFINE range.

Answer 16

The highest number minus the lowest number.

Question 17

(In terms of data) DEFINE interquartile range.

Answer 17

Q1 - median between lowest number and Q2.
Q2 - median of complete data.
Q3 - median between highest number and Q2.

Question 18

(In terms of data) DEFINE census.

Answer 18

Data collected over a whole population.

Question 19

(In terms of data) DEFINE sample.

Answer 19

Data collected over part of the population.

Question 20

(In terms of data) DEFINE observation.

Answer 20

Numerical facts are viewed, collected and tabulated.

Question 21

(In terms of data) DEFINE stratified sample.

Answer 21

Population is broken into categories, data is then collected from a sample of each category.

Question 22

(In terms of data) DEFINE random sample.

Answer 22

All members of the population have equal chance of selection.

Question 23

(In terms of data) DEFINE systematic sample.

Answer 23

Population is divided into structured samples. (Such as every second person).

Question 24

(In terms of data) DEFINE self-selecting sample.

Answer 24

The individuals choose to be part of the data collection.

Question 25

(In terms of data) DEFINE class interval.

Answer 25

A range of grouped data.

Question 26

(In terms of data) DEFINE cluster.

Answer 26

When a high frequency of data is gathered around a certain value.

Question 27

(In terms of data) DEFINE population.

Answer 27

The complete amount of people in a certain area/event/country/community.

Question 28

(In terms of data) DEFINE statistics.

Answer 28

The branch of mathematics that deals with the collection, organisation, analysis and interpretation of data.

Question 29

(In terms of data) DEFINE survey.

Answer 29

A list of questions to gather information/data among individuals/groups.

Question 30

(In terms of data) DEFINE outliers.

Answer 30

A value that is much smaller or larger than the rest of the data.

Q1 - 1.5 x IQR (lower).
Q3 - 1.5 x IQR (higher).

Question 31

(In terms of data) DEFINE modal class.

Answer 31

Highest occurring class.