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20250310 Graphical Descriptions (Using Google Sheet/Excel)

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QUALITATIVE DATA Example 2.1: Data are from Statistic With Technology, Dr. Kozak  https://stats.libretexts.org/Bookshelves/Introductory_Statistics/Statistics_with_Technology_2e_(Kozak)/02%3A_Graphical_Descriptions_of_Data/2.01%3A_Qualitative_Data One Dollar teaches us how to use Google Sheets/Excel to get the given's Relative Frequency. First, copy the provided data and paste it into the Google spreadsheet. Then, add another column, namely "Relative Frequency," next to the Frequency. See the steps below. Note: Letters and Numbers depends on the column and row of the data you want to calculate Category Frequency Relative Frequency (sum=1) Ford 5 0.1 Chevy 12 0.24 Honda 6 0.12 Toyota 12 0.24 Nissan 10 0.2 Other 5 0.1 Total 50 1 This image shows the result after I did the given instructions.  However, these data samples are from the textbook "Statistic with Technology" by Kozak. Reference:  2.1: Qualitative Data - Statistics LibreTexts Example  2.1.2: D...
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My Statistic Academic Poster

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  The definition of Statistics, including the two branches and Measures of Center is all from Statistics with Technology by Dr. Kozak My Canva Design (view only)
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20250602 Using Simulation PhET

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One Dollar Teaches us how to use PhET Simulation   1. Least Squares Regression Image reference: Screenshot in One-Dollar Youtube Live Tool:  Least-Squares Regression - Linear Regression | Correlation | Residuals - PhET Interactive Simulations 2. Graphing Slope-Intercept Image reference: Screenshot in One-Dollar Youtube Live Tool:  Graphing Slope-Intercept - Slope-Intercept Form | Graphing Linear Equations - PhET Interactive Simulations 3. Graphing Quadratics Image reference: Screenshot in One-Dollar Youtube Live Tool:  Graphing Quadratics - Graphing | Parabola | Quadratic Function - PhET Interactive Simulations 4. Curve Fitting Image reference: Screenshot in One-Dollar Youtube Live Tool:  Curve Fitting - Polynomials | Error Analysis | Data - PhET Interactive Simulations Here's I-Yuan Chiang (One Dollar) Lives from his YouTube channel 20250602 Live 1 20250602 Live 2 20250602 Live 3
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20250526 10.1: Regression

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 All Data are from: Statistics with Technology Alcohol Content Calories in 12 oz 4.70% 163 6.70% 215 8.10% 222 0.40% 70 4.15% 104 5.10% 162 5.00% 158 5.00% 155 4.70% 158 6.20% 195 Customize step by step Click customize, then click series Trendline Label should be show equation Show R^2 This graph is made through google sheet' here's the file: Google Sheet Simulation tool:  https://phet.colorado.edu/sims/html/curve-fitting/latest/curve-fitting_all.html https://phet.colorado.edu/en/simulations/least-squares-regression Line regression tool: https://www.statskingdom.com/linear-regression-calculator.html For tutorials and more information: One Dollar Youtube Channel 20250526 Live 1 20250526 Live 2 20250526 Live 3
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20250519 9.3: Independent Samples for Two Means

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Source:  9.3: Independent Samples for Two Means Kathryn Kozak Coconino Community College      Example 9.3.1 hypothesis test for two means      The cholesterol level of patients who had heart attacks was measured two days after the heart attack. The researchers want to see if patients who have heart attacks have higher cholesterol levels over healthy people, so they also measured the cholesterol level of healthy adults who show no signs of heart disease. The data is in Table  9.3.1 ("Cholesterol levels after," 2013). Do the data show that people who have had heart attacks have higher cholesterol levels over patients that have not had heart attacks? Test at the 1% level. Cholesterol Level of Heart Attack Patients Cholesterol Level of Healthy Individual 270 196 236 232 210 200 142 242 280 206 272 178 160 184 220 198 226 160 242 182 186 182 266 198 206 182 318 238 294 198 282 188 234 166 224 204 276 182 282 178 360 212 310 164 280 230 278 186 288 162 ...
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