alleryStart learning →For favourite colours such as red, blue and green, which measure can be found?
- Mean
- Mode
- Median
- Total
Show answer and solution
Correct answer: B. Mode
Colours cannot be added or ordered, but the most frequent colour can still be named as the mode.
Olympiad (Class 7) Data interpretation and analysis — practice questions — page 2
Explore 68 free Data interpretation and analysis questions in Olympiad (Class 7) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 31–60 of 68.
For favourite colours such as red, blue and green, which measure can be found?Read the answer and worked solution →A survey gives mango 12, apple 9, banana 15 and orange 6 votes. The mode isRead the answer and worked solution →Scores 5, 6, 7, 8 occur 2, 3, 3, 2 times. What is the mean score?Read the answer and worked solution →Among 20 children, 4 have 0 siblings, 6 have 1, 8 have 2 and 2 have 3. The median number of siblings isRead the answer and worked solution →Temperatures were 18, 25, 31, 22 and 27 degrees. The range isRead the answer and worked solution →The largest value in a data set is 95 and its range is 40. The smallest value isRead the answer and worked solution →For the data 10, 12, 14, 16 and 18, the mean minus the median isRead the answer and worked solution →The mean of the first five natural numbers isRead the answer and worked solution →What is the mean of the first five even numbers 2, 4, 6, 8 and 10?Read the answer and worked solution →Five consecutive whole numbers have the middle number 17. Their mean isRead the answer and worked solution →The mean of three numbers is 10. Two of them are 7 and 9. The third isRead the answer and worked solution →The value 100 is added to 3, 6, 9, 12, 15. What is the new median?Read the answer and worked solution →Heights in cm are 145, 148, 150, 150, 152 and 155. Their mean isRead the answer and worked solution →Bars for Monday to Friday have heights 12, 18, 15, 21 and 9. What is the total over the five days?Read the answer and worked solution →Daily sales Monday to Friday are 12, 18, 15, 21 and 9. Which day had the highest sales, and so the tallest bar?Read the answer and worked solution →Daily sales of 12, 18, 15, 21 and 9 total 75. What share of the total is Thursday's 21?Read the answer and worked solution →Sales rise from 12 on Monday to 18 on Tuesday. The percentage increase isRead the answer and worked solution →One pie sector shows 10 percent and another shows 30 percent. How many degrees larger is the second sector?Read the answer and worked solution →A pie sector shows one sixth of the data. Its central angle isRead the answer and worked solution →A pie sector has central angle 54 degrees. What percentage of the data is it?Read the answer and worked solution →In a pie chart of 1200 voters, a candidate's sector is 135 degrees. How many votes is that?Read the answer and worked solution →Months of the year, shoe sizes and animal types are examples of which kind of data shown in bar charts?Read the answer and worked solution →Bar charts arranged from highest to lowest incidence are calledRead the answer and worked solution →Why do bar charts usually start the bars from zero?Read the answer and worked solution →A bag holds only red balls. The probability of drawing a red ball isRead the answer and worked solution →A card is picked from cards numbered 1 to 10. The probability of a multiple of 3 isRead the answer and worked solution →The chance of rain tomorrow is 0.35. The chance of no rain isRead the answer and worked solution →A ticket is drawn from tickets numbered 1 to 20. The probability that it is divisible by 5 isRead the answer and worked solution →A fair die is rolled 600 times. About how many sixes should come up?Read the answer and worked solution →A pin lands point up 30 times in 50 throws. The experimental probability of point up isRead the answer and worked solution →
Worked practice questions
A survey gives mango 12, apple 9, banana 15 and orange 6 votes. The mode is
- mango
- apple
- banana
- orange
Show answer and solution
Correct answer: C. banana
Banana has 15 votes, the highest count, so it is the mode.
Scores 5, 6, 7, 8 occur 2, 3, 3, 2 times. What is the mean score?
- 6
- 6.5
- 7
- 7.5
Show answer and solution
Correct answer: B. 6.5
The total is 10 plus 18 plus 21 plus 16, which is 65, and 65 divided by 10 is 6.5.
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