Summarise (practice)

↑ Lecture ⇄ Solutions

Primary exercises

In the survey data:

1. Take a look at the table with glimpse and inspect its dimensions and types.

2. Summarise on mean hand spans {span1,span2} and median pulse.

3. Summarise on mean age and median height.

4. Count the number of males and females.

5. Produce the frequency table on gender and fold. Do the same including clap.

Extra exercises

1. Produce the frequency table on gender and smokes, only females.

2. Produce the frequency table on gender, exercise and smokes but only for male smokers.

3. Do individuals all have different names? Put differently, is each observation uniquely identifiable with the variable name?

4. Find pairs of variables which can uniquely identify each observation. Use name and one other variable for this purpose.

↑ Lecture ⇄ Solutions

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