Beklenen değer vs. örneklem ortalaması

Bu egzersiz uygulaması, 1'den 9'a kadar olan sayıları içeren ayrık eş olasılıklı bir dağılımdan örneklem almanı ve örneklemin ortalamasını hesaplamanı sağlar. Kaydırıcıyı kullanarak örneklem büyüklüğünü ayarlayabilirsin. Bu dağılımın beklenen değerinin 5 olduğunu unutma.

Bir örneklem alınıyor ve eğer örneklem ortalaması 4'ten küçükse yirmi dolar kazanıyorsun. Ama bir şart var: Örneklem büyüklüğünü sen seçiyorsun.

Hangi örneklem büyüklüğü sana yirmi doları kazanma olasılığı en yüksek seçenektir?

Bu egzersiz

R ile İstatistiğe Giriş

kursunun bir parçasıdır

Kursu Görüntüle

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Bu egzersiz

R ile İstatistiğe Giriş

kursunun bir parçasıdır

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Summary statistics gives you the tools you need to boil down massive datasets to reveal the highlights. In this chapter, you'll explore summary statistics including mean, median, and standard deviation, and learn how to accurately interpret them. You'll also develop your critical thinking skills, allowing you to choose the best summary statistics for your data.

Exercise 1: What is statistics?Exercise 2: Descriptive and inferential statistics Exercise 3: Data type classification Exercise 4: Measures of center Exercise 5: Mean and median Exercise 6: Mean vs. median Exercise 7: Measures of spread Exercise 8: Variance and standard deviation Exercise 9: Quartiles, quantiles, and quintiles Exercise 10: Finding outliers using IQR

In this chapter, you'll learn how to generate random samples and measure chance using probability. You'll work with real-world sales data to calculate the probability of a salesperson being successful. Finally, you’ll use the binomial distribution to model events with binary outcomes.

Exercise 1: Şans nedir?Exercise 2: Değiştirmeli mi, değiştirmesiz mi?Exercise 3: Olasılıkları hesaplamak Exercise 4: Anlaşmaları örneklemek Exercise 5: Ayrık dağılımlar Exercise 6: Olasılık dağılımı oluşturma Exercise 7: Dağılımları belirleme Exercise 8: Beklenen değer vs. örneklem ortalaması

Geçerli Egzersiz

Exercise 9: Sürekli dağılımlar Exercise 10: Hangi dağılım?Exercise 11: Veri yedeklemeleri Exercise 12: Bekleme sürelerini simüle etme Exercise 13: Binom dağılımı Exercise 14: Satış anlaşmalarını simüle etmek Exercise 15: Binom olasılıklarını hesaplama Exercise 16: Kaç satış kazanılacak?

It’s time to explore one of the most important probability distributions in statistics, normal distribution. You’ll create histograms to plot normal distributions and gain an understanding of the central limit theorem, before expanding your knowledge of statistical functions by adding the Poisson, exponential, and t-distributions to your repertoire.

Exercise 1: The normal distribution Exercise 2: Distribution of Amir's sales Exercise 3: Probabilities from the normal distribution Exercise 4: Simulating sales under new market conditions Exercise 5: Which market is better?Exercise 6: The central limit theorem Exercise 7: Visualizing sampling distributions Exercise 8: The CLT in action Exercise 9: The mean of means Exercise 10: The Poisson distribution Exercise 11: Identifying lambda Exercise 12: Tracking lead responses Exercise 13: More probability distributions Exercise 14: Too many distributions Exercise 15: Modeling time between leads Exercise 16: The t-distribution

In this chapter, you'll learn how to quantify the strength of a linear relationship between two variables, and explore how confounding variables can affect the relationship between two other variables. You'll also see how a study’s design can influence its results, change how the data should be analyzed, and potentially affect the reliability of your conclusions.

Exercise 1: Correlation Exercise 2: Guess the correlation Exercise 3: Relationships between variables Exercise 4: Correlation caveats Exercise 5: What can't correlation measure?Exercise 6: Transforming variables Exercise 7: Does sugar improve happiness?Exercise 8: Confounders Exercise 9: Design of experiments Exercise 10: Study types Exercise 11: Longitudinal vs. cross-sectional studies Exercise 12: Congratulations!