STATISTICS

Question 1

A branch of mathematics that deals with scientific collection, organization, presentation, analysis, and interpretation of numerical data

Answer 1

Statistics

Question 2

A set of procedyres and rules for reducing large masses of data into manageable proportions allowing us to draw conclusions from those data

Answer 2

Statistics (McCarthy definition)

Question 3

A person who is trained in collecting numerical information (data), evaluating it and drawing conclusions from it

Answer 3

Statistician

Question 4

Assignment of a number to something

Answer 4

Measurement

Question 5

Characteristics or attribute that can assume different values

Answer 5

Variable (data)

Question 6

Values (measurements or observations) that variables can assume

Answer 6

Data Values

Question 7

Consists of all sibjects that are being studied

Answer 7

Population

Question 8

A group of subjects selected from a population

Answer 8

Sample

Question 9

Measure used to describe the population

Answer 9

Parameter

Question 10

Measure computed from sample data

Answer 10

Statistic

Question 11

Consists of the collection, organization, summarization, and presentation of data

Answer 11

Descriptive statistics

Question 12

Consists of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables, and making predictions

Answer 12

Inferential statistics

Question 13

Variables that can be placed into distinct categories, according to some characteristic or attribute

Answer 13

Qualitative data

Question 14

Numerical and can be ordered or ranked

Answer 14

Quantitative data

Question 15

Quantitative data that are countable using a finite count

Answer 15

Discrete Data

Question 16

Quantitative data that can take on any value within a range of values on a numerical scale in such a wat that there are no gaps, jumps, or other interruptions; real valued

Answer 16

Continuous Data

Question 17

Lowest level of data; applied to data that are used for category indentification

Answer 17

Nominal Scale

Question 18

Next higher level of data; characterized by data that applies to categories that can be ranked

Answer 18

Ordinal Scale

Question 19

Applied to data that can be arranged in some order and for which differences in data values are meaningful; results from counting or measuring

Answer 19

Interval Scale

Question 20

Highest level of measurement; applied to data that can be ranked and for which all arithmetic operations including division can be performed; results from counting or measuring

Answer 20

Ratio Scale

Question 21

The process of selecting the individuals from the population that makes up our sample

Answer 21

Sampling

Question 22

Sample sizes can be computed by applying

Answer 22

n = N/1+Ne^2

n= number of samples
N= number of population
e= margin of error

Question 23

The research participants recruit other participants for a test or study; used when potential participants are hard to find

Answer 23

Snowball Sampling

Question 24

Collected in the most convenient manner

Answer 24

Convenience

Question 25

Based on judgments about who in the population would be most likely to provide the needed information

Answer 25

Judgment or Purposive Sampling

Question 26

Every possible sample of a given size has an equal chance of being selected

Answer 26

Simple Random Sampling

Question 27

Divide population into subgroups

Answer 27

Stratified Random Sampling

Question 28

Randomly select ine individual from the 1st group and select every kth individual

Answer 28

Systematic Random Sampling

Question 29

Divide population into several clusters

Answer 29

Cluster Sampling