Term
|
Definition
| a group of methods used to collect, analyze, present, and interpret data and to make decisions |
|
|
Term
|
Definition
consists of methods for organizing, displaying, and describing data by using table, graphs, and summary measures
|
|
|
Term
|
Definition
| Consists of methods that use sample results to help make decisions or predictions about a population |
|
|
Term
|
Definition
| Consists of all elements- individuals, items, or objects, whose characteristics are being studied. |
|
|
Term
|
Definition
| The population being studied |
|
|
Term
|
Definition
| a portion of the population selected for study |
|
|
Term
|
Definition
A survey that includes every member of a population
|
|
|
Term
|
Definition
| the technique of collecting information from a portion of the population |
|
|
Term
|
Definition
| a specific subject or object about which the info is collected |
|
|
Term
|
Definition
| a characteristic under study that assumes different values for different elements |
|
|
Term
|
Definition
|
|
Term
| Observation or Measurement |
|
Definition
| the value of a variable for an element |
|
|
Term
|
Definition
| a collection of observations on one or more variable |
|
|
Term
|
Definition
| can be measured numericaly |
|
|
Term
|
Definition
| a variable whose values are countable |
|
|
Term
|
Definition
| A variable that can assume any numerical value over a certain interval or intervals |
|
|
Term
| Qualitative or Categorial Variable |
|
Definition
| a variable that cannot assume a numerical value, but can be classified into two or more non-numeric categories |
|
|
Term
|
Definition
| data recorded in the sequence in which they are collected and before they are processed |
|
|
Term
|
Definition
the frequency of a class or category divided by the sum of frequencies
Number in Category
Total number |
|
|
Term
|
Definition
| A graph in which the classes are marked on the horizontal axis and frequencies, relative frequencies, or percentages are marked on the vertical axis. Bars drawn adjacent to eachother |
|
|
Term
|
Definition
| The value of the middle term in a data set |
|
|
Term
|
Definition
| numerical measures from the population |
|
|
Term
|
Definition
| a measure of the central tendency calculated by dividing the sum of all values by the number of values in the data set |
|
|
Term
|
Definition
| a measure of spread that is given by the positive square root of the variance |
|
|
Term
|
Definition
|
|
Term
|
Definition
the difference between the third and the first quartiles
Q3-Q1=IQR |
|
|
Term
|
Definition
|
|
Term
|
Definition
| gives the percentage of values in the data set that are smaller than this value |
|
|
Term
|
Definition
| The difference between the largest and smallest value |
|
|
Term
|
Definition
| The summary measures that divide a ranked data set into four equal parts |
|
|
Term
|
Definition
|
|
Term
|
Definition
| an event composed of one and only one of the final outcomes of an experiment |
|
|
Term
|
Definition
| a collection of more than the outcome of an experiment |
|
|
Term
|
Definition
| A numerical measure of the likelihood that a specific event will happen. |
|
|
Term
|
Definition
| the method of assigning probabilities to outcomes or events of an experiment with equally likely outcomes |
|
|
Term
|
Definition
| a process with well-defined outcomes that, when performed, result in one and only ones of the outcomes per repetition |
|
|
Term
|
Definition
| the probability assigned to an event based on the information and judgement of a person |
|
|
Term
|
Definition
| if an experiment is repeated again and again |
|
|
