Week 1

Question 1

a group of all things that share a set of characteristics

Answer 1

Population

Question 2

a subset of the population that is intended to represent the population

Answer 2

Sample

Question 3

when a sample statistic is used to infer the value of a population parameter

Answer 3

Inferential Statistics

Question 4

used to describe the data that was actually collected

Answer 4

Descriptive statistics

Question 5

the difference between a sample statistic value and an actual population parameter value

Answer 5

Sampling error

Question 6

a formal multiple-step procedure for evaluation the likelihood of a prediction called a null hypothesis

Answer 6

Hypothesis testing

Question 7

what are the four different scaled of measurement that vary in their degree of measurement precision?

Answer 7

Normal, ordinal, interval, ratio

Question 8

categorize things into groups that are qualitatively different from other groups

Answer 8

nominal scales

Question 9

Nominal scales yield ___ date

Answer 9

qualitative

Question 10

categorize people into different groups that are rank ordered

Answer 10

ordinal scales

Question 11

qualify how much of something people have

Answer 11

interval scales

Question 12

involve quantifying how much of something people have

Answer 12

ratio scales

Question 13

only occurs in whole units rather than fractions of units

Answer 13

discrete variable

Question 14

occurs in fractions of units

Answer 14

continuous variable

Question 15

A study found an average GPA of 3.0, and the actual average GPA in the population was 3.2. The difference between a GPA of 3.0 and 3.2 is the ___

Answer 15

sampling error

Question 16

the number of students present in one SI meeting is a ___ variable

Answer 16

discrete

Question 17

The time students spend on their homework each week is a ___ variable

Answer 17

continuous

Question 18

a range of techniques and procedures for analyzing, interpreting, displaying, and making decisions based on data

Answer 18

statistics

Question 19

a characteristic of feature of the thing we are interested in understanding

Answer 19

variable

Question 20

a variable that is manipulated by an experimenter

Answer 20

independent variable

Question 21

the variable which Is being effected and measured

Answer 21

dependent variable

Question 22

hair color, eye color, religion, and favorite movie are examples of ___ variables

Answer 22

qualitative

Question 23

height, weight, and shoe size are examples of ___ variables

Answer 23

quantitative

Question 24

the use of random assignment to treatment conditions and manipulation of the independent variable

Answer 24

experimental research

Question 25

getting as close as possible to the conditions of a true experiment when we cannot meet all requirements

Answer 25

quasi-experimental research

Question 26

observing things as they occur naturally and recording our observations as data

Answer 26

non-experimental research