Unit 4- Relationships In Graphs Definitions

Question 0

Define: statistics

Answer 0

Numerical data or the collection, organization and analysis of numerical data

Question 1

Define: hypothesis

Answer 1

A theory or statement that is either true or false

Question 2

Define: primary data

Answer 2

Original data that a researcher gathers specifically for a particular experiment or survey

Question 3

Define: secondary data

Answer 3

Data that someone else has already gathered for some other purpose

Question 4

Define: sample

Answer 4

Any group of people or items selected from a population

Question 5

Define: population

Answer 5

The whole group of people or items being studied

Question 6

Define: census

Answer 6

A survey of all members of a population

Question 7

Define: random sample

Answer 7

A sample in which all members of a population have an equal chance of being chosen

Question 8

Define: simple random sampling

Answer 8

Choosing a specific number of members randomly from the entire population

Question 9

Define: systematic random sampling

Answer 9

Choosing members of a population at fixed intervals from a randomly selected member

Question 10

Define: stratified random sampling

Answer 10

Dividing a population into distinct groups and then choosing the same fraction of members from each group

Question 11

Define: non-random sampling

Answer 11

Using a method that is not random to choose a sample from a population

Question 12

Define: bias

Answer 12

Error resulting from choosing a sample that does not represent the whole population

Question 13

Define: inference

Answer 13

Conclusion based on reasoning and data

Question 14

Define: dependent variable

Answer 14

A variable that is affected by some other variable

Question 15

Define: independent variable

Answer 15

A variable that affects the value of another variable

Question 16

Define: outlier

Answer 16

Measurement that differs significantly from the rest of the data

Question 17

Define: interpolate

Answer 17

To gather or get information from within the data given

Question 18

Define: extrapolate

Answer 18

Predict information from the extended line ( from outside the data)