Practice Introduction To Statistics (5.1) - Statistics - ICSE 9 Mathematics

Practice: Introduction to Statistics

Lesson 5.1Statistics

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9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define data in statistics.
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What kind of information can be considered data?
Question 2.
What is frequency?
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Think of how many students chose a certain color in a survey.
3Question 3.
What is the definition of statistics?
- A branch of science dealing with numbers.
- A method for finding the average.
- The study of collecting, analyzing, and interpreting data.
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Think about the broader role of statistics.
4Question 4.
True or False: Raw data is organized.
- True
- False
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Think about how you might first collect unprocessed information.
Question 5.
You surveyed 25 students about their favorite sports and received the following responses: Football, Basketball, Football, Tennis, Basketball, Tennis, Football, Football, Basketball, Tennis, Football, Basketball, Football, Cricket, Basketball, Tennis, Football, Tennis, Football, Basketball, Football, Tennis, Cricket, Football, Basketball. Create a frequency distribution table.
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Make sure to count each sport carefully!
Question 6.
If a class interval of ages in a survey are found to be 15-20, 21-25, and 26-30 with frequencies of 5, 3, and 7 respectively. Calculate the class mark for each interval.
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Use the formula (Upper Limit + Lower Limit) / 2.

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