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Quizzes

Quick multiple-choice questions shared by teachers and students.

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120 quizzes
The chance of a snowy day is 0.15. If each day's weather did not depend on the day before, what would be the chance of two snowy days in a row? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Hard
In the hill town, the 3 snowy days had a mean highest temperature of 8.7 °C, and the other 17 days 12.5 °C. What may a report say? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Medium
A student writes: \"The mean highest temperature in the hill town was 12 °C, so every day was about 12 °C.\" What is wrong? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Medium
Which sentence is the best limit for a report on 20 winter days in one hill town? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Easy
The spinner has 8 equal sectors: R red, B blue, G green and Y yellow. What is the probability that it stops on red or yellow? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Probability and Chance
StemPy LabStemPy Lab
Easy
Two fair coins are tossed. What is the probability of one head and one tail? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Probability and Chance
StemPy LabStemPy Lab
Medium
Kiran flips a coin four times for a game. If the coin is fair, how likely is she to see tails at least once? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Probability and Chance
StemPy LabStemPy Lab
Hard
A drawer has 3 black and 5 white socks. Two socks are taken without looking, and the first is not put back. What is the probability that both are black? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Probability and Chance
StemPy LabStemPy Lab
Hard
The box plot shows the times that a group of students took to finish a puzzle. What is the interquartile range? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Spread of Data
StemPy LabStemPy Lab
Medium
The values 2, 5, 8, 11 and 14 have a mean of 8. What is their variance? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Spread of Data
StemPy LabStemPy Lab
Hard
The lengths of some ribbons have a standard deviation of 6 cm. A shop adds 4 cm to every ribbon. What is the new standard deviation? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Spread of Data
StemPy LabStemPy Lab
Medium
The masses of some bags of rice have a standard deviation of 2.5 kg. A shop sells them in pairs, so every mass is doubled. What is the standard deviation of the pairs? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Spread of Data
StemPy LabStemPy Lab
Hard
The bar chart shows how many brothers and sisters each of 25 students has. What is the median number? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Hard
Five numbers have a mean of 13. Four of them are 10, 14, 9 and 15. What is the fifth number? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Medium
A coaching centre has a morning batch of 20 learners, whose mean mark is 60, and an evening batch of 30, whose mean mark is 70. What is the mean mark of all 50 learners? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Hard
Every value in a list is multiplied by 3. The median of the list was 7. What is the new median? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
StemPy LabStemPy Lab
Medium
A frequency table has five rows with the frequencies 14, 9, 6, 3 and 8. What is the relative frequency of the largest row? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Tables and Graphs
StemPy LabStemPy Lab
Medium
At School P, 45 of the 150 students cycle to school. At School Q, 40 of the 100 students cycle. Which school has the larger share of cyclists? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Tables and Graphs
StemPy LabStemPy Lab
Medium
A bar chart shows two prices, 98 rupees and 100 rupees, but its axis starts at 96 rupees. How many times as tall as the 98 rupee bar does the 100 rupee bar look? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Tables and Graphs
StemPy LabStemPy Lab
Hard
A pie chart shows the clubs chosen by 72 students. The drama slice has an angle of 80°. How many students chose drama? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Tables and Graphs
StemPy LabStemPy Lab
Hard
A data table lists 45 shops of a market. For each shop it records the name, the street, the number of staff and the daily sales. How many single facts does the table hold? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Data and Sampling
StemPy LabStemPy Lab
Easy
A juice company checks the sugar in 50 bottles taken from a batch of 10,000 bottles. In this study, what is the population? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Data and Sampling
StemPy LabStemPy Lab
Medium
A school wants students' views on its new uniform. Which question is the fairest? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Data and Sampling
StemPy LabStemPy Lab
Easy
The names of all 250 students of a school go into a box, and 25 names are drawn. What is the chance that Ravi, one of the students, is in the sample? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Data and Sampling
StemPy LabStemPy Lab
Hard
Riya wants to start a data project about the weather of her town. What should she do first?
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode, Spread of Data, Probability and Chance
StemPy LabStemPy Lab
Easy
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