STATS

Question 1

The most widely used and known
probability distribution.

Answer 1

NORMAL DISTRIBUTION

Question 2

Considered as the
cornerstone of modern statistics

Answer 2

NORMAL DISTRIBUTION

Question 3

Often called a “Bell Curve” because it looks like a bell.

Answer 3

NORMAL DISTRIBUTION

Question 4

Connotes the average in
ability, intelligence, size, emotional
traits, and personality.

Answer 4

NORMALITY

Question 5

In plain language, most people and
things are ____ and are
embraced in the ____.

Answer 5

MEDIOCRE, MEAN CLASS

Question 6

(1733) He developed
the mathematical
equation of the
normal curve but his
work went unnoticed.

Answer 6

ABRAHAM DE MOIVRE

Question 7

(1809) He also
derived its equation of the
normal distribution from
a study of errors in
repeated measurements

Answer 7

KARL FRIEDRICH GAUSS

Question 7

A continuous random variable

Answer 7

NORMAL DISTRIBUTION

Question 8

Location Parameter

Answer 8

MEAN

Question 8

Scale Parameter

Answer 8

STANDARD DEVIATION

Question 8

Properties of the Normal Distribution

Answer 8

1. CURVE IS BELL- SHAPED
2. CURVE IS SYMMETRIC
3. MEAN, MEDIAN, AND MODE CONCIDE IN THE CENTER.
4. CURVE IS ASYMPTOTIC
5. THE AREA OF THE CURVE IS 1.

Question 9

The width of the curve is determined by the___.

Answer 9

STANDARD DEVIATION

Question 10

Represents the distance
between a given measurement X and the
mean, expressed in standard deviation.

Answer 10

Z-SCORE

Question 11

Table of Areas under the Normal
Curve

Answer 11

Z-SCORE

Question 11

An unaltered measurement

Answer 11

RAW SCORE

Question 12

Are the
activities which could be
repeated over and over again and
which have well-defined results.

Answer 12

EXPERIMENT

Question 13

Is
the set of all outcomes in an
experiment

Answer 13

SAMPLE SPACE

Question 14

Are the
possible results of an
experiment.

Answer 14

OUTCOMES

Question 15

is a characteristic or attribute that can
assume different values.

Answer 15

VARIABLE

Question 16

is a function that associates
a real number to each element in the sample space. It is a
variable whose values are determined by chance.

Answer 16

RANDOM VARIABLE

Question 17

variable that has
a certain number of particular values and
nothing else.

Answer 17

DISCRETE VARIABLE

Question 18

Properties of Discrete Probability Distribution

Question 18

It represents the long-term
average or the central tendency of a
random variable’s possible outcomes when
an experiment is repeated many times.

Answer 18

EXPECTED VALUE OR MEAN OF A RANDOM VARIABLE

Question 18

Any value that can be measured as
decimals or fractions. These are infinitely
situated between two values of reference.

Answer 18

CONTINUOUS VARIABLE

Question 19

Often referred to as the expected value (E[X])

Answer 19

MEAN OF A RANDOM VARIABLE

Question 20

Formula in getting the Mean or Expected
Value of the Discrete Random Variable.

Answer 20

E(X)= ∑ [x ⋅ P(x)]

Question 20

STEPS IN FINDING THE MEAN OF THE DISCRETE
RANDOM VARIABLE.

Answer 20

1. Determine the sample space.
2. Count the number of random variables in each outcome in the
   sample space and assign this number to this outcome.
3. Construct the probability distribution table.
4. Multiply the value of the random variable X by the corresponding
   probability.
5. Add the results obtained in Step 4. Results obtained is the mean of
   the probability distribution.

Question 21

Formula of Variance

Answer 21

VARIANCE(σ²) = ∑ [(x−μ)² P(x)]