MATHEMATICS

Question 1

is the study of the methods of collecting, organizing,
presenting, analyzing, and drawing conclusions about data, commonly
in numerical form.

Answer 1

STATISTIC from the Latin word staticus means out of state

Question 2

is the branch of statistics that focuses on
collecting, summarizing, and presenting a set of data.

Answer 2

descriptive statistic

Question 3

is the branch of statistics that analyzes sample data to draw
conclusions about a population.

Answer 3

inferential statistic

Question 4

consists of all elements – individuals, items, or
objects – whose characteristics are being studied.

Answer 4

population

Question 5

from a
statistical population is a proportion (a subset) of the population
selected for study.

Answer 5

sample

Question 6

is an unorganized data gathered during the collection
stage.

Answer 6

raw data

Question 7

is when we collect data for every member of the group
(the whole “population”).

Answer 7

census

Question 8

A variable that cannot
assume a numerical value but can be classified into two or
more non-numeric categories

Answer 8

Qualitative or Categorical data

Question 9

A variable that can be
measured numerically

Answer 9

quantitative or numerical data

Question 10

Data can be collected in many ways, such as direct
observation, survey, census or sample.

Answer 10

data collection

Question 11

There are a wide variety of ways to summarize, organize, and

present data. Most of the common methods are as follows: stem-
and-leaf diagrams, frequency distributions, histograms, bar, and

other graphs.

Answer 11

data organization

Question 12

is a special table where each data value is
split into a “stem” (the first digit or digits) and a “leaf” (usually the
last digit). The “stem” values are listed down, and the “leaf” values
go right (or left) from the stem values.

Answer 12

stem and leaf

Question 13

is a graphical display of data using dots.

Answer 13

dot plot

Question 14

is a representation, either in a graphical
or tabular format, which displays the number of observations
within a given interval. The interval size depends on the data being
analysed and the goals of the analyst. The intervals must be
mutually exclusive and exhaustive.

Answer 14

frequency distribution

Question 15

is a graphical display of
data using bars of different heights.

Answer 15

bar graph/ chart // histogram

Question 16

a graph that shows information that is connected
in some way (such as change over time)

Answer 16

line graph

Question 17

a special chart that uses “pie slices” to show
relative sizes of data.

Answer 17

pie chart

Question 18

is a way of showing data using images.

Answer 18

pictograph

Question 19

countable

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discrete variables

Question 20

as infinite number of value

Answer 20

continuous variables

Question 21

is a summary statistic that
represents the center point or typical value of a dataset. These
measures indicate where most values in a distribution fall and are also
referred to as the central location of a distribution.

Answer 21

central of tendency

Question 22

is the sum of measurements divided by their number.

The arithmetic average or —– is most widely used and is hence
called the ‘Common Average’ or even simply ‘Average’. It is a measure of
central value. It provides an accurate description of the sample and
indirectly, that of population.

defined as the point on the
scale of measurement obtained by dividing the sum of all the scores by
the number of scores.

Answer 22

mean

Question 23

is defined as the middle value in a distribution, below
and above which lie values with equal total frequencies or probabilities

Answer 23

median

Question 24

is the single measure or score which occurs most
frequently.

Answer 24

mode

Question 25

which is also known as raw data, is data that
has not been placed in any group or category after collection. Data is
categorized in numbers or characteristics.

Answer 25

ungrouped data

Question 26

If n is —–, then the median is the middle number.

Answer 26

odd

Question 27

If n is —-, then the median is the average of the two middle number.

Answer 27

even

Question 28

is the state of getting dispersed or spread.

Answer 28

dispersion

Question 29

means the extent to which a numerical data is likely to
vary about an average value.

Answer 29

statistical dispersion

Question 30

is the difference between the largest and the smallest
observation in the data.

Answer 30

range

Question 31

is the most commonly used measure of
dispersion. It is a measure of spread of data about the mean. SD is the
square root of the sum of squared deviation from the mean divided by
the number of observations.

The square root of the variance is known as
the standard deviation i.e.

Answer 31

standard deviation

Question 32

tells the variation of the data from one
another and gives a clear idea about the distribution of the data.

Answer 32

measure of dispersion

Question 33

contains the same unit
as the original data set. ———- method expresses
the variations in terms of the average of deviations of
observations like standard or means deviations.

Answer 33

absolute dispersion

Question 34

Deduct the mean from each data in the set then
squaring each of them and adding each square. Finally divide
them by the total number of values in the data set.

Answer 34

variance

Question 35

The average of numbers is known as
the mean and the arithmetic mean of the absolute deviations of
the observations from a measure of central tendency is known as
the mean deviation (also called mean absolute deviation).

Answer 35

mean and mean deviation

Question 36

are used to compare the
distribution of two or more data sets. This measure compares values
without units. Common relative dispersion methods include:

Answer 36

relative measure of dispersion

Question 37

are the data or scores that are arranged in a frequency distribution.

Answer 37

grouped data