Chap 16: Statistical Measurements

Question 1

Branch of mathematics used to summarize, organize, present, analyze, and interpret numerical data

Answer 1

STATISTICS

Question 2

Randomized & uncertainty in observations which may be used to draw inferences about process or populations being studies

Answer 2

INFERENCE STATISTICS

Question 2

Uses of descriptive statistics

Answer 2

1. Frequency distribution
2. Graphic presentation

Question 2

A vital element which can predict a phenomenon based on data leading to theory development

Answer 2

INFERENCE

Question 2

Statistics intended to describe, show, organize, and summarize numerical data from the population sample

Answer 2

DESCRIPTIVE STATISTICS

Question 2

Statistical method that can be used to summarize or describe a collection of data

Answer 2

DESCRIPTIVE STATISTICS

Question 2

Descriptive statistics and inferential statistics together

Answer 2

APPLIED STATISTICS

Question 2

Data are presented in graphic form to make frequency distribution data readily apparent

Answer 2

GRAPHIC PRESENTATION

Question 2

Used to describe range, variance, and standard deviation. Identifies distribution of score by stating intervals

Answer 2

MEASURES OF DISPERSION OR VARIATION

Question 2

The difference between data obtained from a random sampled population and data that would be obtained if an entire population is measured.

Occurs when the sample does not accurately reflect the population

Answer 2

SAMPLING ERROR

Question 2

Usually assume that an extreme score can occur in either tail of the normal curve

Answer 2

NON-DIRECTIONALHYPOTHESES

Question 3

Scores are tested from highest to lowest or vice versa

Answer 3

FREQUENCY DISTRIBUTION

Question 3

Used to describe mean, median, mode. Locates distribution by various points

Answer 3

MEASURES OF CENTRAL TENDENCY

Question 3

A theoretical frequency distribution based on an infinite number of samples

Answer 3

SAMPLING DISTRIBUTION

Question 3

Used to describe percentile ranks.

Answer 3

MEASURES OF POSITION

Question 3

Concerned with measurements for the sample of subjects from the population and compare of the treatment groups to make generalization about the group/subjects

Answer 3

INFERENTIAL STATISTICS

Question 3

Occurs when samples are not carefully selected as in non-probability sampling

Answer 3

SAMPLING BIAS

Question 4

A theoretical frequency distribution of all possible values in a population although no real distribution exactly fits normal curve

Answer 4

NORMAL CORVE

Question 4

The test for directional hypothesis and extreme statistical values that occur on a single tail

Answer 4

ONE-TAILED TEST OF SIGNFICANCE

Question 4

According to this theory, 2 types of errors can occur when a researcher is deciding what the results of statistical test means

Answer 4

USE DECISION THEORY

Question 4

Analysis of a nondirectional hypothesis. Predicts whether difference will be in the tail above or below the mean

Answer 4

TWO-TAILED TEST OF SIGNIFICANCE

Question 5

Occurs when the null hypothesis is regarded as true but it is in fact false.

Answer 5

TYPE II ERROR

Question 5

Occurs when the null hypothesis is rejected when in realty it is not

Occurs when level of significance is at 0.05

Answer 5

TYPE 1 ERROR

Question 6

Way to control Type III error. Calculation used to estimate the smallest sample size needed for an experiment.

Answer 6

POWER ANALYSIS

Question 7

Interpretation of statistical tests

Answer 7

DEGREE OF FREEDOM (DOF)

Question 8

A method to organize research data

Answer 8

FREQUENCY DISTRIBUTION

Question 9

Types of frequency distribution:

Answer 9

1. Grouped frequency distribution 2 Ungrouped frequency distribution

Question 10

These are used with nominal data or when continuous variable such as being examined for weight, BP, Vital lung capacity

Answer 10

GROUPED FREQUENCY DISTRIBUTION