Thanks.

__Reference for Descriptive Statistic:__
100% = All

80% = Majority

75% = Three-quarter

65% = Two-thirds

50% = Half

33% = One-third

20% = One-fifth

10% = Minority/One-tenth

0% = Nill/None

__Value (+/-):__
0.0 –
0.20 = very weak relationship

0.21–
0.40 = weak relationship

0.41–
0.60 = moderate

0.61–
0.80 = strong relationship

0.81 – 1.00 = very strong relationship

X Y

(

**+**)
(

**-**)

__Central Tendencies__**MODE**= the highest frequency

**MEDIAN**= arrange form the smallest to the biggest, and then take the middle no. Example:

1 2 2 4 5 7 7

Number 4 is the median.
But if there are two numbers instead of one, both numbers should be plus or add
and then divide by two, for example:

1 2 2 3 4 4 5 6 7 8 8 9

= 4+5=9. 9÷2=4.5

There for the MEDIAN are 4.5

**MEAN**=

__or an average score of the total__

__Indices of Dispersion____Standard Deviation:__

or

__Variant:__

V=S²

__Correlation (relationship)__**=**

**If we control x, what is y?**

__Slope (b):__
• = 13+b=?

**To find a if x=0**

__Intercept (a):__

__Equation of Straight Line:__
To find y = y
= a + bx

To find x = a
= bx = y

bx = y –
a

x =

Reminder to make as below to ease your calculation:

r =? , =? =? =? N=? =? =? =? =? SDy=? SDx=?

__DEFINITIONS:__**A set of mathematical method for organizing, summarizing and interpreting method.**

__Statistic:__**: classical way to collect data, to count or measure the variable.**

__Tally System__**1.**

**are statistical methods that are use to organizing, summarizing and simplify the data to describe the population.**

__Descriptive Statistic:__**2.**

**are techniques that allowed us to study samples and then make generalizations about the populations.**

__Inferential/Corollation Statistic:__

__DATA:__
1.

**a characteristic or condition that does not vary but is the same for every person.**__Constant:__
2.

**: a characteristic or condition that changes or has different values between one another.**__Variables__**is the variable that is manipulated by researchers and assume as the cause.**

__Independent Variables:__**: Is the variable there is observe for changes in order to access the effect of the treatment.**

__Dependent Variables__**Observation over 2 types of variables regarding their relationship.**

__Corrolation:__**The observation of relationship between IV and DV where both of them may consist more than one variable.**

__Multiple Variables:__

__TYPES OF MEASUREMENT__**1.**

**is a set of categorize that are indicated by different names according to their particular characteristics. Example: Gender, race, etc.**

__Nominal:__

**2.**

**is a set of categorizes that are organized in an order sequence. For example from high to low, level of studies, etc.**

__Ordinal:__

**3.**

**is a set of one ordered categories where each categorize is set with certain values. Example: range 3 to 30, etc.**

__Interval:__

__T-TEST__**1.**

**Testing a variable with a Test Score.**

__One sample T-Test:__

**2.**

**Comparing two categories with a variable.**

__Independent T-Test:__

**3.**

**Comparison of two separate variables.**

__Paired T-Test:__