5. I
a. Numerical facts which can be
measured enumerated and estimated.
b. Facts are homogeneous and related to
each other.
c. Facts must be accurate.
d. It must be collected systematically.
15. ๏It helps the teacher to provide the most exact
type of description.
๏It makes the teacher definite and exact in
procedures and thinking.
๏It enables the teacher to summarize the results
in a meaningful and convenient form.
16. ๏It helps the teacher to predict the future
performance of the pupils.
๏It enables the teacher to draw general
conclusions.
๏It enables the teacher to analyse some of the
causal factors underlying complex and
otherwise bewildering events.
18. 1. Data
2. Score
3. Continuous Series
4. Discrete Series
5. Variable
6.. Variability
7. Frequency
8.Frequency Distribution
9.Correlation
10.Coefficient
11.Coefficient of Correlation
20. Score is the numerical
evaluation of the
performance of an
individual on a test.
21. Continuous series is a series of
observations in which the various
possible values of the variable may
differ by infinitesimal amounts. In the
series it is possible to occur at any
intermediate value within the range of
the series.
22. Discrete Series
is a series in which the values of a variable
are arranged according to magnitude or to
some ordered principles. In this series it is
not possible to occur at any intermediate
value within the range. The example of such
is merit, number of persons or census data.
V
23. Variable-Any trait or quality
which has the ability to vary or
has at least two points of
measurement. It is the trait
that changes from one case or
condition to another.
24. Variablity
The spread of scores, usually
indicated by quartile
deviations, standard
deviations, range etc.
25. Frequency may be defined as the
number of occurrences of any given
value or set of values. For example 8
students have scored 65. So that the
score 65 has a frequency of 8.
26. Frequency Distribution
It is a tabulation showing the
frequencies of the values of a
variable when these values are
arranged in order of magnitude.
-
27. Correlation
๏Correlation means the interdepended
between two or more random variables.
It may be stated as the tendency for
corresponding observation in two or
more series to vary together from the
averages of their respective series, that
is, to have similar relative position.
28. If corresponding observations tend to have similar
relative positions in their respective series, the
correlation is positive; if the corresponding values
tend to be divergent in position in their respective
series, the correlation is negative; absence of any
systematic tendency for the corresponding obser-
vations to be either similar or dissimilar in their
relative positions indicated zero correlation.
29. Coeffficient It is a statistical
constant that is
independent of the unit of
measurement.
30. Coefficient of correlation:
It is a pure number, limited by the
values + 1.00 and โ1.00 that
expresses the degree of relationship
between two continuous variables.
