Thursday, October 25, 2018
my word file of NPC
Application
Of Normal Probability Curve
Some of
the most important applications of normal probability curve are as follows:
The principles of Normal Probability Curve are applied in
the behavioural sciences in many different areas.
1.
NPC is used to determine the percentage of cases in a normal distribution
within given limits:
The Normal Probability Curve
helps us to determine:
i. What percent of cases fall between two
scores of a distribution.
ii. What
percent of scores lie above a particular score of a distribution.
iii. What
percent of scores lie below a particular score of a distribution.
2.
NPC is used to determine the value of a score whose percentile rank is given:
By using NPC
table we can determine the raw score of the individual if the percentile rank
is given.
3. NPC
is used to find the limits in a normal distribution which include a given
percentage of cases:
When a
distribution is normally distributed and what we know about the distribution is
Mean and the Standard deviation at that time by using the table area under NPC
we can determine the limits which include a given percentage of cases.
4. It
is used to compare two distributions in terms of- overlapping:
If scores
of two groups on a particular variable are normally distributed. What we know
about the group is the mean and standard deviation of both the groups. And we
want to know how much the first group over-laps the second group or vice-versa
at that time we can determine this by using the table area under NPC.
5. NPC
helps us in dividing a group into sub-groups according to certain ability and
assigning the grades:
When we want
to divide a large group in to certain sub-groups according to some specified
ability at that time we use the standard deviation units of a NPC as units of
scale.
6. NPC
helps to determine the relative difficulty of test items or problems:
When it is
known that what percentage of students successfully solved a problem we can
determine the difficulty level of the item or problem by using table area under
NPC.
7. NPC
is useful to normalize a frequency distribution:
In order to
normalize a frequency distribution we use Normal Probability Curve. For the
process of standardizing a psychological test this process is very much
necessary.
8. To
test the significance of observations of experiments we use NPC:
In an
experiment we test the relationship among variables whether these are due to
chance fluctuations or errors of sampling procedure or it is real relationship.
This is done with the help of table area under NPC.
9. NPC
is used to generalize about population from the sample:
We compute
standard error of mean, standard error of standard deviation and other
statistics to generalize about the population from which the sample are drawn.
For this computation we use the table area under NPC.
Wednesday, October 24, 2018
profile
BIO-DATA
Name : Pravitha K.K
Fathers Name : Krishnankutty
Address : Kunthippadath
Thenkara(P.O)
Mannarkkad
PIN – 678582
Date of Birth : 12-09-1992
Religion : Hindu
Caste :
Thandan
Martial Status : Single
Sex : Female
Educational
Qualification : BA History, B Ed
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