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