Lesson 12

Question 1

Can be used to SUMMARIZE OR DESCRIBE a collection of data

Answer 1

Descriptive statistics

Question 2

Randomized and uncertainty in the observation may be used to DRAW INFERENCES

Answer 2

Inferential statistics

Question 3

A vital element of scientific research, since it will PREDICT A PHENOMENON based on data leading to theory development

Answer 3

Inference

Question 4

Scores are tested from highest to lowest or from lowest to highest

Answer 4

Frequency description

Question 5

Data are presented in graphic form

Answer 5

Graphic presentation

Question 6

Predict future consequences

Answer 6

Inferential statistics

Question 7

Used to describe the mean median mode

Answer 7

Measure of central tendency

Question 8

these are statistics intended to organize and summarize NUMERICAL DATA from the population and sample

Answer 8

descriptive statistics

Question 9

the difference between data obtained from a random sampled population and the data obtained from an entire population

Answer 9

sampling error

Question 10

a theoretical frequency distribution based on an INFINITE number of samples

Answer 10

sampling distribution

Question 11

occurs when samples are not carefully selected as in non-probability

Answer 11

sampling bias

Question 12

the average; adding all up the values in a data set and dividing by the total number in a data set

Answer 12

mean

Question 13

put the data in order and then find the number located right in the middle

Answer 13

median

Question 14

the number that appears the most in a list of numbers

Answer 14

mode

Question 15

the difference between the largest and smallest number of data

Answer 15

range

Question 16

this is a theoretical frequency ‘distribution of all possible value in a population’ although no real distribution exactly fits this

Answer 16

normal curve

Question 17

usually ASSUME THAT AN EXTREME SCORE can occur in either tail of the normal curve

Answer 17

non-directional hypotheses

Question 18

the test for directional hypothesis and the extreme statistical values that occur on SINGLE TAIL CURVE

Answer 18

one-tailed test significance

Question 19

the analysis of non-directional hypothesis; the researcher to have sufficient knowledge of the variables to predict whether THE DIFFERENCE WILL BE IN THE TAIL ABOVE THE MEAN OR BELOW THE MEAN

Answer 19

two-tailed test