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Flashcards in Chapter 1 Deck (25):
1

Variables whose values are determined by chance are called ____.

Random Variables

2

A collection of data values forms a___.

Data Set

3

Each value in the data set is called a___ or a ___.

Data Value
Datum

4

_____consists of the collection, organization, summarization, and presentation of data.

Descriptive Statistics

5

____consists of generalizing from samples to populations, perfor- ming estimations and hypothesis tests, determining relationships among variables, and making predictions.

Inferential Statistics

6

The area of inferential statistics called____?

Hypothesis testing

7

_____are variables that have distinct categories according to some characteristic or attribute.

Qualitative

8

____are variables that can be counted or measured.

Quanitative

9

____assume values that can be counted.

Discrete variables

10

____can assume an infinite number of values between any two specific values. They are obtained by measuring. They often include fractions and decimals.

Contious Variable

11

____of a number, then, is defined as a class in which a data value would be placed before the data value was rounded.

Boundary

12

____ classifies data into mutually exclusive (nonover- lapping) categories in which no order or ranking can be imposed on the data.

Nominal

13

_____classifies data into categories that can be ranked; however, precise differences between the ranks do not exist.

Ordinal

14

____is a sample obtained by selecting every kth member of the population where k is a counting number.

Systemic sample

15

____is a sample obtained by dividing the population into subgroups or strata according to some characteristic relevant to the study.

Stratisfied

16

____is obtained by dividing the population into sections or clusters and then selecting one or more clusters and using all members in the cluster(s) as the members of the sample.

Cluster

17

The independent variable is also called the ____

Explanatory variable

18

he resultant variable is called the____.

Dependent variable or outcome variable

19

A____is the organization of raw data in table form, using classes and frequencies.

Frequency Distribution

20

Each raw data value is placed into a quantitative or qualitative category called a___

Class

21

The numbers in the sec- ond column are called___.

Class Boundaries

22

A _____distribution is a distribution that shows the number of data values less than or equal to a specific value

Cumplative frequency

23

The _____s a graph that displays the data by using contiguous vertical bars

Histogram

24

The _____ is a graph that displays the data by using lines that connect points plotted for the frequencies at the midpoints of the classes.

Frequency Polygon

25

The____ is a graph that represents the cumulative frequencies for the classes in a frequency distribution.

Ogive