STATISTICS Chapter 2 and 11

2.1 and 2.2: Review of Basic Statistics Topics covered today:  Mean, Median, Mode  5 number summary and box plot  Interquartile Range (IQR) and Outliers Notes: Mean, Median, Mode pg. 79  Mean:  Median:  Mode: Practice: Find the mean, median, and mode of

2.1 and 2.2: Review of Basic Statistics Notes: 5 number summary and Box Plot pg. 82  Step 1: Find the median  Step 2: Find the Quartile 1 and 3 values  Step 3: Find the Minimum and Maximum  Step 4: Sketch the box plot Practice: Sketch the Box Plot Notes: Outliers, Pg. 82  Find the IQR (Q3-Q1)  Place the “fences” using the 1.5*IQR rule Practice

2.2 and 2.3: Measure of Spread Topics covered today:  Standard Deviation  Histograms  Percentile Rank Notes: Standard Deviation Pg. 97  Step 1: Find the Mean  Step 2: Solve each Deviation (formula = value-mean)  Step 3: Square each Deviation, then Sum up  Step 4: Divide the Sum by n-1  Step 5: Square Root the Quotient  Standard Deviation: The “average” amount of acceptable error Practice: Find the standard deviation and explain

2.2 and 2.3: Measure of Spread Notes: Histograms Pg. 103  Bins  Frequency Practice: Notes: Percentile Ranks Pg. 105  The percentage of data values that are BELOW the given value Practice

11.2: Probability Distribution Topics covered today:  Probability Distribution Graph Notes: Probability Distribution pg. 625  All probabilities must add up to 1  p(x) = (# of items in x)/(# in sample set) Practice Ex A pg. 626

11.2: Probability Distribution Practice Ex. B pg. 627 Class Activity: #12 pg. 630  Split up into Presidents and Vice Presidents  Required a-c. All students use a bin width of 2

11.3: Normal Curve

Practice Notes: Rule of Deviations pg. 646  68% of the area under a normal curve falls with 1 standard deviation of the mean  95% within 2 standard deviations  99.7% within 3 standard deviations Practice: Mark the on the graphs above

11.4: Z-values and Confidence Intervals