PRELIMS

Question 1

Areas of Statistics

Answer 1

Descriptive and Inferential Statistics

Question 2

Involves the collection, organization and presentation of data.

Answer 2

Descriptive Statistics

Question 3

Involves generalizing from samples to populations performing estimations and hypothesis tests and predictions.

Answer 3

Inferential Statistics

Question 4

The human beings or subjects that are being studied.

Answer 4

Population

Question 5

Characteristic of a population.

Answer 5

Parameter

Question 6

Subset of a population

Answer 6

Sample

Question 7

Characteristic of a sample

Answer 7

Statistic

Question 8

A characteristic or quality that can take on different values.

Answer 8

Variable

Question 9

Data

Answer 9

The values or the measurements that the variables can assume.

Question 10

Qualitative Variables are numerical and can be ordered or ranked. True or False?

Answer 10

False. Qualitative Variables refers to categories according to some characteristic. (can either b numerical or non-numeric)

Question 11

Two types of quantitative variables.

Answer 11

Discrete Quantitative and Continuous Quantitative Variables

Question 12

Countable values

Answer 12

Discrete Quantitative Variables

Question 13

Can be obtained by measuring. Can assume infinite number of values along line interval.

Answer 13

Continuous Quantitative Variable

Question 14

Quantities that can assume just one value.

Answer 14

Constants

Question 15

A variable that the researcher chooses to study in order to assess its possible effects or influence on one or more other variables.

Answer 15

Independent Variable

Question 16

The variable which is presumed to be affected by the IV.

Answer 16

Dependent Variable

Question 17

A secondary IV that modifies the relationship between the primary IV and DV.

Answer 17

Moderator Variable

Question 18

What is a. Mediator Variable?

Answer 18

a variable that attempts to explain the relationship between two other variables.

Question 19

Define Extraneous Variable

Answer 19

Independent variables that cannot be controlled.

Question 20

What are the 4 Levels of Measurement

Answer 20

Nominal
Ordinal
Interval
Ratio

Question 21

Classifies data into mutually exclusive categories that are “equal”.

Answer 21

Nominal

Question 22

Define Ordinal Measurement.

Answer 22

Classifies data into mutually exclusive categories which are ranked.

Question 23

Ranks data and there are precise differences between units of measure.

Answer 23

Interval Measurement

Question 24

Ratio

Answer 24

Has meaningful zero.

Question 25

Quali or Quanti? If Quanti, discrete or continuous? Area of specialization of BSET students.

Answer 25

Quali

Question 26

Defined as the chance of an event is occurring.

Answer 26

Probability

Question 27

A variable whose values are determined by chance.

Answer 27

Random Variable

Question 28

Describes the probabilities of the possible values of a continuous random variable.

Answer 28

Continuous Probability Distribution

Question 29

Consists of the values a random variable can assume and the corresponding probabilities of the values.

Answer 29

Discrete Probability Distribution

Question 30

Binomial Distribution

Answer 30

outcomes of a binomial experiment.

Question 31

3 Types of Data Presentation

Answer 31

Textual, tabular, and graphical forms.

Question 32

Used when the goal of the presenter is to provide background about an event.

Answer 32

Textual presentation

Question 33

Most common in representing individual and both quantitative and quali information.

Answer 33

Tabular Presentation

Question 34

Divides the data set into 100 equal parts

Answer 34

Percentile

Question 35

Divides the data set into ten equal parts.

Answer 35

Decile

Question 36

Divides the data set into four equal parts.

Answer 36

Quartile

Question 37

The squared deviations from the mean.

Answer 37

Variance

Question 38

The square root of the squared deviations from the mean.

Answer 38

Standard Deviation

Question 39

The mean of the highest and the lowest score.

Answer 39

Midrange

Question 40

Each data value is plotted as a point along a scale of values.

Answer 40

Dot plot

Question 41

Line graph that shows cumulative frequencies.

Answer 41

Ogive

Question 42

Graph used for nominal data.

Answer 42

Bar Graph

Question 43

Graph used for ratio and interval data.

Answer 43

Histogram

Question 44

Graph that also used for ratio and interval data. The class mark or midpoint is used as dots connected by lines.

Answer 44

Frequency Polygon

Question 45

Quantitative data with separate values: the stem and the leaf

Answer 45

Stemplot