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Data Science / Datawetenskap - 141
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In which R package can the data set mtcars be found?
In a typical data matrix representation, rows represent observations and columns represent variables.
In Tutorial 2 Question 2.7, how many irises were selected? (That is, how many irises are there in the data set with a sepal length greater than 5?)
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?