The first experiment module of China’s Tiangong space station docked successfully early on Monday, 13 hours after blast-off from the southern province of Hainan. Wentian, which is designed for science ...

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Explain why probability is important to statistics and data science. See the relationship between conditional and independent events in a statistical experiment. Calculate the expectation and variance ...

In Lesson 2 part 2, students use the two models created in prior lessons to ask questions about the apparent motion of astronomical objects in Earth’s sky. Students use their questions to develop a ...