Lesson 1 Flashcards
Two kinds of Statistics
Descriptive and Inferential
includes all members of a defined gorup that we are studying or collecting information on for data driven decisions
Population
is a proportion of the population, a slice of it, a part of it and all its characteristics
Sample
is a scientific body of knowledge that deals with collection, organization or presentation, analysis and interpretation of data
Statistics
Two types of sampling technique
Probability and Non-probability
this is data from the population
Parameter
Two kinds of Data
Qualitative and Quantitative
a classification of data that involves the process of counting and measuring
Quantitative
a classification of Data that involves describing qualities
Qualitative
Types of Quantitative Data
this type of Quantitative Data is finite and its values can be obtained through the process of counting. It can assume specific values only
Discrete Data
Types of Quantitative Data
this type of Quantitative Data is infinite and includes measurable values (units). it is measured rather than counted
Continuous Data
a variable which is affected or influenced by another variable
Dependent Variable
The 4 scales of measurement
Nominal, Ordinal, Interval and Ratio
a variable which affects or influences another variable
Independent Variable
Scales of measurement
The most primitive level of measurement. Used when distinguishing one object from another for identification pruposes. Data is categorized
Nominal Scale
Scales of measurement
this is the level of data where data is arranged in some specified order or rank
Ordinal Data
Scales of measurement
This level of data indicates the exact difference between objects but it does not have a true zero point
Interval Data
Scales of measurement
This level of data indicates the exact difference between objects and always starts from a true zero point
Ratio Data
This is property or characteristics of a population or sample which makes the members of the group similar to each other
constant
states facts and proven outcomes from a population
Descriptive Statistics
analyze samplings to make predictions about larger populations
inferential statistics
involves randomly selecting participants from a target population
probability sampling
involves purposefully selecting participants based on the researcher’s judgment or convenience
non-probability sampling
