Practice Basic Data Exploration Techniques (6.3) - Data Exploration

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the mean of the values: 4, 8, 6, 5, 3?
Show hintHide hint
Find the sum of the values first.
Question 2.
What is the mode of the values: 2, 4, 4, 5, 6?
Show hintHide hint
Look for the number that appears the most.
3Question 3.
What is the primary purpose of understanding dataset structure?
- To identify data types
- To understand data size
- To visualize data
Show hintHide hint
Think about why data dimensions are essential.
4Question 4.
True or False: The mode of a dataset can be more than one value.
- True
- False
Show hintHide hint
Consider datasets with repeated values.
Question 5.
Given a dataset with ages: [23, 30, 23, 35, 36, 40, 42], calculate the mean, median, and mode.
Show hintHide hint
Remember to sort the data for median and count for mode.
Question 6.
In a survey dataset, identify how you would handle missing values effectively.
Show hintHide hint
Consider the implications of each option on your analysis.

4 more questions in this section. Enroll free to practise them all.