Please open attachment and view economics worksheet…complete ALL…AND NO PLAGIARISMNEED AN A ON THIS WORKSHEET
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Albany State University
Department of Business Administration
Basic Statistics 3205
Amaechi N. Nwaokaro, PhD
Instruction: Instruction: Answer all the questions with the key word or words in Part A.
A perfect answer to each question in part A is worth 2 percentage points (20 percentage
points) for the 10 questions. Solve the Problems in Parts B and C and answer the
questions following each. Each perfect solution to B and C parts is 40 percentage points
(80 percentage points). The least percentage points from all the parts is 100.
1) What is the idea behind frequency distribution?
2) Which is the common sampling method?
3) What is the measure of central tendency called?
4) What observation basically describes a sample size?
5) What is the measure of dispersion from a mean called?
6) Sample mean or the population mean: which varies the most?
7) Sample mean or individual observation: which varies the most?
8) What is the benefit of increasing the sample size?
9) Numerically characterize a Standard Normal Distribution
10) What is the very important characteristic of t-distribution?
2) With the following randomly selected observations:
a) Determine the Regression Equation.
b) Determine the value of Y hat when X is 7
2) From the following randomly selected observations:
a) Determine the Pearson Coefficient of Correlation, r.
b) Interpret the association between X and Y.
c) Estimate the Coefficient of Determination, R2.
(X- x )2
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