Data Collection and Representation
Math ⇒ Statistics and Probability
Data Collection and Representation starts at 6 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Data Collection and Representation.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
A class of 20 students scored the following marks in a test: 5, 7, 8, 6, 9, 7, 8, 6, 7, 8, 9, 6, 7, 8, 7, 6, 8, 7, 6, 8. What is the mode?
A data set consists of the following values: 2, 4, 4, 6, 8. What is the median?
A data set has the following values: 3, 7, 7, 10, 12. Calculate the mean.
A frequency table shows the number of students who scored in different ranges: 0-10: 2, 11-20: 5, 21-30: 8, 31-40: 5. What is the modal class?
A researcher wants to study the average height of students in a school. Should they use a sample or a census? Explain your answer.
A survey is conducted to find out the favorite sport among students. The results are: Football - 12, Basketball - 8, Cricket - 10, Tennis - 5. What is the total number of students surveyed?
Describe one advantage and one disadvantage of using secondary data.
Describe the main difference between qualitative and quantitative data.
Explain the difference between discrete and continuous data.
Explain why a histogram is not suitable for representing categorical data.
Explain why it is important to avoid bias in data collection.
