Refers to statistical facts, since an mixture of characters or a collection of data. Refers to a group of strategies that are used to collect, analyze, present and interpret data and also to arrive at results or help to make decisions. Descriptive Statistics
Works with methods of recording/ tabulating data with their visible presentation, with the properties of varied kinds of actions, with devices for computer them, and in fact, with all means of providing an summary information of the data themselves. Ex girlfriend or boyfriend.
A supervisor responsible for 40 clerks would like to understand their average salary. A sports writer wishes to list the highest goal creators in all hockey games in the last 5 NCAA seasons. Inferential Statistics
Handles inferences, realization, and/or outlook about an entire set of info that may be drawn from the research of a part of this group of data. Ex lover. A tyre dealer would like to calculate the average your life of a particular brand of car tire. Ex. An organization projects a 50% development in the next five years after analyzing its revenue within the past five years. Population
Incorporate all factors вЂ“ individuals, items or objects вЂ“ whose features are getting studied. The amount of elements within a population is referred to as population size (n). Sample
It is a part of the population chosen for research. The number of elements in a test is called test size (n). Variable:
A characteristic from the element under study which in turn assumes several values for different elements. Qualitative Variable
A variable cannot assume a numerical benefit and on which mathematical businesses will have zero meaning Ex. Color, City Status, Gender
A changing that can be assessed numerically.
Ex lover. Course level, thermometer reading, monthly telephone bill
A variable in whose values certainly are a result of checking.
AВ quantitative variableВ whose pair of possible beliefs isВ countable. Ex lover. variables whose possible values are a part of the integers, such as Sociable Security numbers, the number of people in a relatives, ages rounded to the closest year, В etc. No . of condominiums built-in Manila within the last five years.
No . of folks that died of lung tumor in the Israel
A variable that can presume any numerical value on the certain interval/result of measurement. AВ quantitative variableВ isВ continuousВ if its set of possible values is uncountable. Ex. heat, exact height, exact grow older
Amount of soda used by a student in a month.
Explanation of a attribute of a population.
Information of a attribute of a test.
A number that may be computed via data, including no unknownВ parameters. As a function of aВ random sample, a statistic is aВ random varying. Statistics prefer estimateВ parameters, and toВ test hypotheses. Survey:
Study of only a portion with the population
Analyze of certain characteristics of each and every element of a population. Testing Survey
Producing inferences having a sample.
Noticed data are merely classified in various distinctive categories through which no ordering is implied. Ex. Sexuality, Ownership of any house
Noticed data are simply just classified in to distinct classes w/ ranking implied in which the difference in rank can be consistent in direction although not in value. Ex.
Faculty rank (Lecturer / Instructor / Professor)
Year level (freshmen, sophomore, junior, senior)
Observed info are put in an bought scale where the difference between measurements in a consistent meaningful quantity. Ex. Gregorian diary, measurement of longitude, way of measuring of tides Ratio Range
Observed info are placed in an purchased scale where the differences are meaningful and equal by any means points around the scale and a measurement of no means lack of the credit being assessed. Ex. Acceleration or Velocity, Salary, measure of heat in Kelvin Range Primary Data
DataВ observed or collected directly from first-handВ experience....