M5

Question 1

representing counts or measurements

Answer 1

Numerical data

Question 2

descriptions or characteristics

Answer 2

Categorical data

Question 3

Any recording of information is called

Answer 3

observation

Question 4

comprises those methods concerned
with collecting and describing a set of data so as to yield
meaningful information.

Answer 4

Descriptive statistics

Question 5

comprises those methods concerned
with the analysis of a subset of data leading to predictions or
inferences about the entire set of data.

Answer 5

STATISTICAL INFERENCE

Question 6

Infer the expected amount of rain for July next year based
on the average precipitation data for July in the past 30
years.

Answer 6

STATISTICAL INFERENCE

Question 7

consists of the totality of the observations with

which we are concerned. May be finite or infinite

Answer 7

population

Question 8

is a subset of a population.

Answer 8

sample

Question 9

representative of the

population.

Answer 9

sample

Question 10

A useful tool in choosing a randon sample from any population

Answer 10

Table of Random Samples

Question 11

are often used to compare quantities in

different categories.

Answer 11

bar graphs

Question 12

used to show the distribution or

proportions of parts to a whole

Answer 12

pie graph

Question 13

show information that is connected in some

way like changes through time.

Answer 13

Line Graphs

Question 14

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

Answer 14

frequency distributuion

Question 15

When the range of the data is large, the data must be grouped into classes that are more than one unit in width, in what is callsed a

Answer 15

group frequency distribution

Question 16

each class is defined by its X, which are the smalles and highest data value that can be included in the class

Answer 16

class limits

Question 17

are numbers used to separate the classes so that there are no gaps in the frequency distribution

Answer 17

class boundaries

Question 18

are used to show how many data values are accumulated up to and including a specific class

Answer 18

cumulative frequencies

Question 19

what is the formula for class mark

Answer 19

(lower limit + upper lim) /2

Question 20

a bar graph that frequencies against the class boundaries

Answer 20

histogram

Question 21

is the line graph of the frequencies against the class marks. Close the polygon at the lowest and highest class boundaries

Answer 21

frequency polygon

Question 22

line graph of the comulative frequency with the upper boundary

Answer 22

ogive

Question 23

These values are used to represent a set of data.

Answer 23

mean median mode

Question 24

2 types of mean

Answer 24

populatn sample

Question 25

is the middle number when all observations are arranged in

increasing or decreasing order.

Answer 25

median

Question 26

that value which occurs

most often with the greatest frequency.

Answer 26

mode

Question 27

These values are used to describe the distribution of a

set of data

Answer 27

• Range
• Variance
• Standard Deviation

Question 28

the difference between the largest and smallest number in the set

Answer 28

Range

Question 29

This is the value used to compare values from different sets

with different mean and standard deviation.

Answer 29

z-score

Question 30

representative value of the elements of each class

Answer 30

percentile

Question 31

is a chance process that leads to well-defined results called outcomes

Answer 31

probability experiment

Question 32

is a result of a single trial of a probability experiment

Answer 32

outcome

Question 33

is the set of all possible outcomes of a probability experiment

Answer 33

sample space

Question 34

consists of a set of outcomes of a probability experiment

Answer 34

even

Question 35

are events that have the same probability of occuring

Answer 35

equally likely events

Question 36

assumes that all outcomes in the sample space are equally likely to occur

Answer 36

classical probability