Calculus is the mathematics of change, and the primary tool for studying change
is a procedure called differentiation.
Rates of Change and slope
y = mx + c
y 2 y1
x 2 x1
# Rate of change is measured by slope
f(x) = y
f x h
y f x h f x
The chi-square distribution has only one parameter, called the degrees of freedom. The shape of
a chi-square distribution curve is skewed to the right for small df and becomes symmetric for
large df. The entire chi-square distribution curve lies to the ri
The arithmetic mean is the sum of all the observations divided by the number of observations. It
is written in statistical term as
n i 1
Example: Final exam marks of biostatistics of 4 students are 75, 60, 67 and 80.
The objective of estimation is to determine the approximate value of a population parameter on
the basis of a sample statistic.
A point estimator estimates the value of an unknown parameter using a single value or point.
Data recorded in the sequence in which they are collected and before they are processed or
ranked are also called raw data.
INTI UC conducted a survey of last years Faculty of Business graduates to determine the
general areas in which t
The following requirements apply to a probability density function
a x b
whose range is
for all x between a and b
f ( x ) 0
2. The total area under the curve between a and b is 1.0
The normal distribution is the most important of all probabilit