Category 1
What is the outlier by distance from the sun: Mercury (0.39 AU), Earth (1 AU), Far far out (132 AU)
Far Far Out
What type of data is "The mass of each shell in a collection of sea shells"
Numerical Continuous
What is Bias in Data?
A tendency which causes a difference in the results of a survey and the true facts.
What is the sample?
A portion of the population
What is stratified sampling?
Where the population is divided into groups and individuals are surveyed in that group
What type of data is "The results of a survey asking people to rate a TV program as good, satisfactory or poor"
Categorical Ordinal
What is numerical discrete data?
Data that can be counted and has a limited amount of values
What is a Bi-Modal Set of Data?
A set of data that has 2 peaks.
What is the Mode?
The value which appears the most in the data.
What is systematic sampling?
Individuals are selected at regular intervals.
What is the Mean?
The Average.
What is an outlier
A value in the data that is far bigger or smaller than the others.
How to calculate median when there are 2 middle numbers?
Add them up and divide by 2.
How do you calculate the mean?
All the values added divided by the amount of values
Mean
What is numerical continuous data?
Data that can be measured - can take on any value
What is categorical ordinal data?
Categorical data that can be sorted into groups or categories
What are the mean and median known as?
Measures of Centres
List the Outlier: 1, 3, 9, 2, 3, 5, 1
9
What type of data is "The number of computers in a household"
Numerical Discrete
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What Categorical Data follows no order?
Categorical Nominal
What is a survey of the whole population called?
A census
What is random sampling?
Everyone in the population has an equal chance of being selected
What does an outlier affect the most?