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 12
A class of 40 students was surveyed about their favorite sport. The results are: Football: 16, Basketball: 12, Cricket: 8, Tennis: 4. What percentage of students prefer Basketball?
A data set contains the following values: 5, 7, 7, 8, 10. What is the median?
A data set has the following values: 2, 4, 4, 6, 8, 10. Calculate the mean.
A frequency distribution table has the following class intervals: 10-20, 20-30, 30-40, 40-50. If the frequency for 20-30 is 8, what is the cumulative frequency up to 30?
A researcher collects data on the number of hours students study per week and their exam scores. Which type of graph is most suitable to display the relationship between these two variables?
A researcher wants to study the average height of students in a school. She measures the height of every 10th student on the school roster. What sampling method is she using?
Describe one advantage and one disadvantage of using interviews for data collection.
Describe one situation where a pie chart would be an inappropriate choice for data representation.
Explain the difference between a population and a sample in statistics.
Explain the difference between qualitative and quantitative data.
Explain why random sampling is important in data collection.
