What does the "S" in CRISP-DM stand for?

Which of the following best explains the difference between a population and a sample?

You are working with a small data set, which contains marks for first year students who took Data Science 141 (ds141), Probability Theory and Statistics 114 (pts114) and Computer Science 114 (cs114).  The data set is stored in an object named marks and is shown below.

Which of the code options below will produce the following output?

Data science is simply statistics with a bit of coding.

You are working with a small data set, which contains marks for first year students who took Data Science 141 (ds141), Probability Theory and Statistics 114 (pts114) and Computer Science 114 (cs114).  The data set is stored in an object named marks and is shown below.

Which of the code options below could you use to obtain only the average Data Science 141 mark for the students in this data set?

Level of education can be an example of an ordinal categorical variable.

What are the dimensions of the mtcars data frame?

The context in which data science solutions will be used is not really of interest to data scientists.

You are working with a small data set, which contains marks for first year students who took Data Science 141 (ds141), Probability Theory and Statistics 114 (pts114) and Computer Science 114 (cs114).  The data set is stored in an object named marks and is shown below.

Which of the code options below could you use to find the students who obtained exactly 75 for Probability Theory and Statistics 114?