Sampling and Estimation
1. A company selling apparel online sends out emails every
Monday to all its customers who made a purchase. This is
an example of a
A) systematic sample.
B) convenience sample.
C) simple random sample.
D) stratified sampl
Sampling and Sampling
Predict and forecast values of
Test hypotheses about values of
The Normal Distribution
they work they fit lots
of data in real world
Std. Dev = 14.76
Mean = 35.3
N = 713.00
Ht (cm 1996
Height (cm) of Hypericum cumulicola at Archbo
AMIT K BARDHAN
FA C U LT Y O F M A N A G E M E N T S T U D I E S
UNIVERSITY OF DELHI
The prospect of getting rich is highly motivating, and
few people get rich without taking a gamble.
Peter L. Bernstein
a statement of what the researcher
believes will be the outcome of an
experiment or a study.
a more formal structure derived from the
Linear correlation and
cov ( x , y )
X )( yi Y )
cov(X,Y) > 0
X and Y are positively correlated
cov(X,Y) < 0
X and Y are inversely correlated
cov(X,Y) = 0
X and Y are independent
A point estimate consists of a single
sample statistic that is used to estimate the
true population parameter.
TRUE / FALSE
The sample mean is a point estimate of
the population mean.
TRUE / FALSE
A point estimate consist
In its standardized form, the normal distribution
A) has a mean of 0 and a standard deviation
B) has a mean of 1 and a variance of 0.
C) has an area equal to 0.5.
D) cannot be used to approximate discrete