key words

Question 1

the branch of mathematics that deals with collecting, organizing, & interpreting data

Answer 1

statistics

Question 2

a set of all data under study

Answer 2

population

Question 3

slovin’s formula?

Answer 3

n = N/1+Ne2

Question 4

the set of all data drawn from the population

Answer 4

sample

Question 5

what does “e” stand for in slovin’s formula?

Answer 5

margin of error

Question 6

what does “N” stand for in slovin’s formula?

Answer 6

total population

Question 7

what does “n” stand for in slovin’s formula?

Answer 7

number of samples

Question 8

a main branch of statistics that summarizes & describes the important characteristics of the population/sample

Answer 8

descriptive

Question 9

a branch of statistics that it used to draw conclusions, make predictions, & make decisions about the characteristics of a population

Answer 9

inferential

Question 10

units of info (usually numbered) that are collected through distribution

Answer 10

data

Question 11

a type of data that is raw

Answer 11

ungrouped

Question 12

a type of data that is presented in a form of frequency distribution

Answer 12

grouped

Question 13

the process of gathering info from different sources to answer/solve a particular study

Answer 13

data collection

Question 14

a method that collects data through verbal responses

Answer 14

interview method

Question 15

a method that collects data though sets of questions (printed or electronic copy)

Answer 15

questionnaire method

Question 16

a method that collects data by carefully watching of facts as they occur through the course of nature

Answer 16

observation method

Question 17

a type of info that is collected directly from the first-hand source

Answer 17

primary data

Question 18

a type of info that is collected by someone other than the actual user

Answer 18

secondary data

Question 19

it is composed of numbers representing counts & measurements

Answer 19

quantitative data

Question 20

it is divided into distinct categories that are distinguished by some nonnumeric characteristics.

Answer 20

qualitative data

Question 21

a way of presenting/organizing the data collected in tabular form using classes & frequencies

Answer 21

frequency distribution table

Question 22

classifies a given data set under a specific category/class

Answer 22

ungrouped frequency distribution

Question 23

has an interval or ratio-level data

Answer 23

grouped frequency distribution

Question 24

in the grouped frequency distribution table, this is the smallest data value included.

Answer 24

lower class limit

Question 25

in the grouped frequency distribution table, this is the largest data value included.

Answer 25

upper class limit

Question 26

in the grouped frequency distribution table, this is used to separate the classes so that there are no gaps.

Answer 26

class boundaries

Question 27

in the grouped frequency distribution table, this is the midpoint of the classes

Answer 27

class marks

Question 28

what is the formula for class marks?

Answer 28

lower limit + upper limit / 2

Question 29

in the grouped frequency distribution table, this is the difference between two (2) consecutive lower class limits.

Answer 29

class width

Question 30

what does the ungrouped frequency distribution table consist of?

Answer 30

n (category), tally, & frequency

Question 31

what does the grouped frequency distribution table consist of? (columns)

Answer 31

class interval, tally, frequency, class boundaries, class mark

Question 32

what does the grouped frequency distribution table consist of? (rows)

Answer 32

lower class limit, upper class limit, class boundaries, class marks, & class width