Jerry's Notebook 育正的記事本

2026.03.23 01. 吃吐司--含有添加劑 cf. 不含添加劑 02. 今天試吃含有亞硝酸的粉 聞起來沒什麼味道，但吃起來有鹹味（簡直是鹽巴） 心得：今天的體驗很讚！

 3.2 Result: 3.3 From this textbook . Along with the center and the variability, another useful numerical measure is the ranking of a number. A  percentile  is a measure of ranking. It represents a location measurement of a data value to the rest of the values. Many standardized tests give the results as a percentile. Doctors also use percentiles to track a child’s growth. The  kth percentile  is the data value that has k% of the data at or below that value. Percentile :  one of the points into which a large range of numbers, results, etc. is divided to make 100 groups of the same size  (From Cambridge dictionary) kth percentile :   Is a measure in statistics indicating the value below which a given percentage ( ) of data points fall in an ordered dataset. It splits data into 100 equal parts, showing relative standing: if a score is in the 90th percentile, 90% of scores are lower. EXP3.3.3  five-number summary for an even number of data ...

1. 秤杯子與蓋子的重量 5.0g 杯子 + 1.0g 蓋子  2.  杯子 十五杯 重：64.0g 3.  第一組 15杯子 + 15蓋子 ＝ 87.6g   4.  第二組 15杯子 + 15蓋子 ＝ 87.6g 5. 第一組（杯子裝酒釀+蓋子）*15 ＝ 1429.0g 1429- 6*15 ＝1429 - 90 ＝ 1339g 1339/15 ＝ 大約 89.3g （比較多的版本） 89.3*50＝4,465g 6. 第二組（杯子裝酒釀+蓋子）*15 ＝ 734.5g 734.5- 6*15 ＝734.5 - 90 ＝644.5 g 644.5/15 ＝ 大約 43g （比較少的版本） 43*50＝2,150g 如果我們給50人的班，我們一個40g，一次1000g，那麼膨脹後約2000g，水放600g左右呢？ 水1000g，一次三鍋就2000*3＝6000g 心得：挑戰自我！讓我飛更高！

Textbook 3.1 EXP 3.1.2  1-1. Transpose 1-2. Arrange A to Z EXP 3.1.4 Mean= Average Textbook 3.2  Range = highest value - ( Subtraction=Minus, less ) lowest value Deviations:  The amount by which a measurement is different from a fixed number or amount (Meaning from Cambridge) More calculator information:  https://www.calculatorsoup.com/calculators/math/basic.php  ----------------------------------------------------------------------------------------------- x̄ (X bar)  https://wumbo.net/symbols/x-bar/ Learn "X bar" definition and some example website: https://www.geeksforgeeks.org/maths/what-is-x-bar-in-statistics/ I share something about X bar information website with you~ Definition of x̄ x̄ is a  measure of central tendency  that represents the average value of given sample data points with a single value. x̄ is also known as a sample mean. Mathematically, it is defined as the sum of all given data points divided by the total number of data po...

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2.3: Other Graphical Representations of Data From this website . First Use data to insert chart, then Customise, and finally choose series. Second Third  Last one

Today, I tell you about learning Statistics lesson somethings. KeyPoint:  2.1 Qualitative Data Notes These are results. I show you around, following is them. Textbook Definition Pie charts and bar graphs are the most common ways of displaying qualitative data. A spreadsheet program like Excel can make both of them. The first step for either graph is to make a frequency or relative frequency table. A frequency table is a summary of the data with counts of how often a data value (or category) occurs. My textbook link:  2.1 https://stats.libretexts.org/Bookshelves/Introductory_Statistics/Statistics_with_Technology_2e_(Kozak)/02%3A_Graphical_Descriptions_of_Data/2.01%3A_Qualitative_Data 2.2 https://stats.libretexts.org/Bookshelves/Introductory_Statistics/Statistics_with_Technology_2e_(Kozak)/02%3A_Graphical_Descriptions_of_Data/2.02%3A_Quantitative_Data Next Point set a arrangement  (This is a way)