BASIC CONCEPTS IN STATISTICS

Question 1

It is a collection of methods for planning experiments, obtaining data, and then analyzing, interpreting, and drawing conclusions based on the data.

Answer 1

STATISTICS

Question 2

are the values that the variables can assume.

Answer 2

Data

Question 3

is a characteristic that is observable or measurable in every unit of the universe.

Answer 3

Variable

Question 4

is the set of all possible values of a
variable.

Answer 4

Population

Question 5

is a subgroup of a population.

Answer 5

Sample

Question 6

-words or codes that represent a class or category.
-express a categorical attribute
-gender
-religion
-marital status
-Highest educational attainment

Answer 6

Qualitative Variables

Question 7

-number that represents an amount or a count.
-numerical data and sizes are meaningful and answer
questions such as “how many” or “how much”.
-Height
-Weight
-household size
-number of registered cars

Answer 7

Quantitative Variables

Question 8

Quantitative: ___________ Variables:
-data that can be counted
-number of days
-Number of siblings
-Usual number of text messages sent in day
-Usual daily allowance in school

Answer 8

Quantitative Discrete Variables

Question 9

Quantitative: ___________ Variables:
it can assume all values between any two specific values like 0.5, and 1.2. etc. and data that can be measured.
-weight
-height
-body temperature

Answer 9

Quantitative Continuous Variables

Question 9

-Nominal Level
-Ordinal Level
-Interval Level
-Ratio Level

Answer 9

Levels of Measurement

Question 10

This is characterized by data that consists of names, labels, or categories only.
-gender
-most preferred color
-usual sleeping time
-civil status

Answer 10

Nominal Level

Question 11

This involves data that arranged in some order, but differences between data.
-happiness index for the day
-highest educational attainment
-the rankings of tennis player
-Academic Excellence Awards

Answer 11

Ordinal Level

Question 12

This is the same at the ordinal level, with an additional property that we can determine meaningful amounts of differences between the data.
-body temperature
-Intelligence Quotient

Answer 12

Interval Level

Question 13

-This is an interval level modified to include the inherent zero starting point.
-It possesses a meaningful absolute, fixed zero pint and allows all arithmetic operations.
-number of siblings
-weight
-height

Answer 13

Ratio Level

Question 14

Four Basic Methods of Sampling

Answer 14

-Random Sampling
-Systematic Sampling
-Stratified Sampling
-Cluster Sampling

Question 15

Sampling Method? This is done by using chance or random
numbers.

Answer 15

Random Sampling

Question 16

Sampling Method? This is done by numbering each subject of the population and then selecting nth number.

Answer 16

Systematic Sampling

Question 17

Sampling Method? If a populåtion has a distinct groups, it
is possible to divide the population into these groups and to
draw SRS’s from each of the groups

Answer 17

Stratified Sampling

Question 18

Sampling Method? This method uses intact groups called
clusters.

Answer 18

Cluster Sampling