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 7
A class of 20 students was surveyed about their favorite sport. The results were: Football - 8, Basketball - 6, Cricket - 4, Tennis - 2. What percentage of students chose Basketball?
A data set has the following values: 2, 4, 4, 6, 8. What is the mean?
A survey of 50 students found that 20 like reading, 15 like sports, and 15 like music. What fraction of students like sports?
A survey was conducted to find the favorite fruit of 30 students. The results are: Apple - 10, Banana - 8, Orange - 7, Mango - 5. What is the mode of the data?
What is the main advantage of using a sample instead of a population in data collection?
What is the main difference between primary and secondary data?
What is the main purpose of collecting data in statistics?
What is the median of the following data set: 4, 7, 9, 10, 12?
What is the mode of the following data set: 5, 7, 7, 8, 9, 10?
What is the range of the following data set: 3, 7, 8, 2, 10?
What type of graph would you use to show the change in temperature over a week?
A data set contains the following values: 12, 15, 15, 18, 20, 22, 25, 25, 25, 30. What is the range of the data?
A frequency table shows the number of pets owned by students: 0 pets - 4 students, 1 pet - 7 students, 2 pets - 5 students, 3 pets - 2 students. What is the median number of pets owned?
A group of students recorded the number of books they read in a month: 3, 7, 5, 8, 6, 7, 5, 9, 7, 6. If one more student who read 10 books is added to the group, how does the mean change? Calculate the new mean.
A line graph shows the number of visitors to a museum over 6 months: January - 120, February - 150, March - 180, April - 160, May - 200, June - 170. Between which two consecutive months was the greatest increase in visitors?
Explain why using a sample is sometimes necessary instead of collecting data from the entire population.
