math haha

Question 1

Patterns in Nature

Answer 1

Symmetry
Trees, Fractals
Spirals
Waves, dunes
Bubbles, foam
Tessellations
Cracks
Spots, stripes

Question 2

GOLDEN RATIO

Answer 2

1.618

Question 3

Two Branches of Statistics

Answer 3

Descriptive Statistics
Inferential Statistics

Question 4

Using the data gathered on a group to describe or reach conclusions about the same group
E.g., class average, range of scores in an exam

Answer 4

Descriptive Statistics

Question 5

A researcher gathers data from a sample and uses the statistics generated to reach conclusions about the population from the sample drawn.

Answer 5

Inferential Statistics

Question 6

Two Types of Variables

Answer 6

Qualitative Variables (category)
Quantitative Variables (numbers)

Question 7

Variables that can be placed into distinct categories according to some characteristic or attribute (e.g., gender)

Answer 7

Qualitative Variables (category)

Question 8

Variables are numerical and can be ordered and ranked

Answer 8

Quantitative Variables (numbers)

Question 9

Characteristic of interest about an object under investigation

Answer 9

Variable

Question 10

Quantitative Variables

Answer 10

Discrete (whole number)
Continuous (decimal)

Question 11

Countable. Data are obtained by counting
Example: the number of children in a family

Answer 11

Discrete (whole number)

Question 12

Can assume an infinite number of values in an interval between any two specific values.
Examples: temperature

Answer 12

Continuous (decimal)

Question 13

Four Levels of Data Management

Answer 13

• Nominal (naming, labeling, classification)
• Ordinal (ranking, order)
• Interval (zero has meaning)
• Ratio (zero has no meaning)

Question 14

naming, labeling, classification

Answer 14

Nominal

Question 15

– lowest level of data management
– for identification and classification

Answer 15

Nominal

Question 16

ranking, order

Answer 16

Ordinal

Question 17

use to reflect some rank or order of individuals or objects

Answer 17

Ordinal

Question 18

where zero has meaning

Answer 18

Interval

Question 19

zero is arbitrary (e.g., Temperature)

Answer 19

Interval

Question 20

where zero has NO meaning

Answer 20

Ratio

Question 21

– highest level of data measurement
– zero is absolute (e.g., height)

Answer 21

Ratio

Question 22

Data Collection Method

Answer 22

1. Survey (easy to conduct)
2. Direct Observation (Qualitative)
3. Experiment method (Cause and Effect)
4. Registration Method (need to participate)

Question 23

Makes use of questionnaires (can be telephone, email, personal)

Answer 23

Survey (easy to conduct)

Question 24

Data regarding the behavior, attitudes, values, or cultural patterns of individuals are gathered.

Answer 24

Direct Observation (Qualitative)

Question 25

The objective is to determine cause-and-effect relationships.

Answer 25

Experiment method (Cause and Effect)

Question 25

Provide information to comply with a law or policy.

Answer 25

Registration Method (need to participate)

Question 26

Different Forms of Presentation of Data

Answer 26

Textual Tabular Graphical Presentation

Question 27

presents data in a paragraph form

Answer 27

Textual

Question 28

-presents data in tables -more precise, systematic, and orderly

Answer 28

Tabular

Question 29

Effective method of presenting statistical results and can present clear pictures of the data

Answer 29

Graphical Presentation

Question 30

Under Graphical Presentation

Answer 30

Bar Graph Line Graph Pie Chart Pictogram (Picture Graph) Cartogram (Map Graph)

Question 31

consists of bars either vertically or horizontally and usually constructed for comparative purposes

Answer 31

Bar Graph

Question 32

Shows the relationship between one or more sets of quantities; best used to establish trends

Answer 32

Line Graph

Question 33

used to represent quantities that make up a whole.

Answer 33

Pie Chart

Question 34

It utilizes picture symbols to represent values.

Answer 34

Pictogram (Picture Graph)

Question 35

It is used to present geographical data. A map is drawn and divided into the desired regions.

Answer 35

Cartogram (Map Graph)

Question 36

Is a single score or value that stands for or represents a group of scores or values of the items in a set of data.

Answer 36

MEASURES OF CENTRAL TENDENCY

Question 37

The sum divided by the count

Answer 37

MEAN (X̄)

Question 38

This is a positional measure and the middlemost value in the distribution.

Answer 38

MEDIAN (Md)

Question 39

This is the value or item in a distribution that occurs most frequently or has the highest frequency.

Answer 39

MODE (Mo)

Question 40

1. These are the scores of the students in a 20-item quiz: 13, 15, 18, 12, 11, 17, 18, 19, 20.

Answer 40

1. 15.89

Question 41

2. These are the prices of sweet corn sold in San Pedro: 20, 23, 22, 18, 15, 25, 20, 30.

Answer 41

2. 21.625

Question 42

- Describes how spread the individual values are from the average - values are used to determine the scatter of values in a distribution

Answer 42

Measures of Variability

Question 43

Is the simplest and the easiest to compute among the measures of variability

Answer 43

Range

Question 44

is the difference between the highest and the lowest score in the distribution.

Answer 44

R = H – L

Question 45

is the square of the deviation from the mean

Answer 45

Variance

Question 46

is the square root of variance.

Answer 46

Standard Deviation

Question 47

- It is a measure of how far a set of numbers is spread out. - It describes how far the numbers lie from the mean. - A high standard deviation indicates that the data points are spread out over a large range of values

Answer 47

Standard Deviation