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Introduction to Statistics

"Welcome back to School! Wish everyone in the new semester
More happiness! More Health! More Bright Future!"
-- Dr K

Join Google Study Group for discussion, get help from homework questions.

• How Hot is Statistics/Big Data now:
Statistics/Big Data is like teenage sex
Nobody really knows how to do it
Everyone thinks everyone else is doing it
So everyone claims they are doing it....

For the textbooks of statistics, Elementary Statistics, 2nd CA Edition, by Triola, ISBN: 1269328212, Pearson. The following are the amazon links for the textbook and student solution manual. You may consider buying together with other classmates if it's expensive.

Lecture01: Introduction, Motivation to Stats
Lecture02: Measure of Central Tendency, Variance, Measure of Position
Homework #1: from section 3.1, 3.2, 3.3 Central Tendency, Variance
Homework #1 Solution: from section 3.1, 3.2, 3.3
Lecture03: Addition rule of probability,Multiplication rule,Independent Events
Homework #2: Multiplication rule   Homework #2 Solution
Hw #3:permutation, combination       Hw #3:Solution
Lecture04: Counting rules,Permutation, Combination
Please Print out: Exam 1 formula sheet
Lecture05: probability distribution, binomial distribution
Hw #4: probability distribution       Hw #4 detail Solution
Lecture06: Normal distribution, approximation to normal distribution
Lecture07: Central Limit theorem, approximation to binomial distribution
Print out: Normal Distribution Table
Homework #5: Normal Distribution       HW #5: More detail
Homework #6: Central Limit Theorem       Hw #6: solution
Lecture08: Confidence Interval for the mean       T Table
Please print out: Exam 2 formula sheet
Homework #7: Confidence Interval from 7.1-7.3 solution
Hw #7: solution more details
Lecture09: Introduction to Hypothesis testing

Lecture10: 5 Steps for Hypothesis testing about the mean
Homework #8: Z test for Hypothesis testing with Solution
Homework #9: T test with solution
Lecture11: Hypothesis testing about the difference of 2 means -I
Lecture12: Hypothesis testing about the difference of 2 means -II
Items for Exam 3: formula sheet   T Table   Z Table

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Exam with solutions
We provide the comprehensive final exams, and the detailed solutions with step by step explaination, plus the final grading rules!
Final Exam 1   Final 1 solutions   Final Exam 2   Final 2 solutions   Final Exam 3   Final 3 solutions   Final 4 solutions
Practice Exam Review 1a     Practice Exam Review 1b     Practice Exam Review 2a
Practice Exam Review 2b     Practice Exam Review 3a     Practice Exam Review 3b

Here are 2 more useful and powerful big data applications:

• If you want to find the household income around your neighborhood, or monthly rent, education level, race distribution, same-sex couple around your neighborhood, you can go to the NYTimes webiste.

• If you want to find out whether there are Sex Crime Offenders around your neighborhood, you can go to the MeganLaw Government webiste.

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