STA2023: Activities

**Spring 2020, Broward College**

**01/07:** Orientation, Introduction to the course. Preview and Statistical Thinking. Chapter1 Notes. Stat 101 (additional) Notes.

Chapter 2: Frequency Distributions, Histograms, Stem and Leaf Plots. Chapter2 Notes. Download Normtemp excel file (Data taken from the Journal of Statistics Education online data archive. Norm temp in F for 130 individuals, dataset includes gender and heart rate.)

Lab 1 RStudio. Practice 1; Practice1Answers. Practice2; Practice2Answers.

**01/14:** Chapter 3: Measures of center, measures of variation, measures of relative standing and boxplots. Chapter3 Notes. Charts that matters;

Practice 3. Practice 3 Ans. Practice3 answers in RStudio. Chapters 1, 2, 3 concepts summary pdf.

Lab 2 RStudio.

**01/21**. Chapter 4: intro to Probabililty. Basic concepts, addition and multiplication rule. Complements and conditional probability, counting rules, permutations, combinations, problems involving combinations. Odds. Chapter4 Notes. Conditional probabilty examples.

Practice4. Practice4_worked answers. Lab 3 RStudio.

**01/28**: Review for Test 1 consists of: Review01, Review01_answers_in_R;

Practice4, Practice4_worked answers (probability questions not included on Review01) and Discussion (Essay questions).

Example of Hw question in R using Excel.

**02/04. Test 1** (Chapters 1, 2, 3 & 4). Additional formulas.

**02/11:** Probability distributions. Binomial Probability distribution.

Chapter 5 Notes. Lab 4 RStudio. Practice5. Practice5 answers in RStudio.

Additional questions: Two binomial probability experiments.

Answer to Two Binomial experiments using R.

**02/18:** The standard Normal distribution. Applications. Central Limit theorem.

Chapter6 Notes**.** Lab 5 RStudio. Practice 06. Practice 06 Ans in R.

**Central Limit Theorem: **

Regardless of the population distribution model, as the sample size increases, the sample mean tends to be normally distributed around the population mean.

**T-Distribution:**

The t distribution, also known as Student t-distribution, is a probability distribution that is used to estimate population parameters when the sample size is small and when the population variance is unknown.

**02/25:** Confidence intervals or intervals estimate: Estimating a Population proportion and a Population mean. Chapter7Notes. Lab 6 RStudio.

Practice 7. Practice 7 answ in R.

**03/10:** Review 02. Review answers in R.

**03/17:** **Test 2** (Chapters 5, 6 & 7).

**Rare Event Rule for Inferential Statistics:** if under a given assumption, the probability of a particular observed event is extremely rare, we conclude that the assumption is probably incorrect.

**03/24:** Hypotesis Testing. Chapter8Notes.

Hypothesis Testing Conclusion Wording by M. Triola.

*Hypothesis Testing examples to work and discuss in class. *Worked answers to examples here.

Step-by-Step procedure for Hypothesis testing (includes formulas)

**03/31**: Inferences about two means. Independent & dependent samples.

Notes, comparing two groups. Independent samples.

Dependent Samples.

Correlation and regression. Notes.

**04/07: **Review3 based on practices 8 and 9 for **Test 3**.

Mock Test 3 on **04/07** ... test yourself !

Step by Step answers to mock test; using both, graphing calculators and formulas.

**04/14:** **Test 3**.

**04/21.** Review for Final Exam.

**04/28**: **Final exam**.

**Instructions on how to use your calculators (Statistics):**

Scientific calculatotors like TI 36 Pro, TI 30 II, Casio fx 115 ES only perform a limited number of operations ( Chapter 3):

**R code:** > barplot(dbinom(x = 0:10, size = 10, prob = 0.5),names.arg = 0:10,space=0, main="Binomial dist histogram for n=10, p=.5")

Probability: The Deck of Cards.

A deck of cards consists of 4 suits, 13 cards each for a total of 52 cards. The four suits are: **Spades**, **Hearts, Diamonds**, and **Clubs.** Each suit contains an A (Ace), numbers
from 2 to 10, and three face cards: **J**, The Jack;** Q**, the Queen and **K**, the King.

Colors: Hearts and Diamonds are red, Spades and Clubs are black.

**Spades**, **Hearts, Diamonds**, **Clubs**: