Daily Practice · Foundation
March 2025 5-a-day
Printing for a group?
The batch download puts all 2 tiers' March 2025 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in March 2025
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2025Two classes sit the same test. Class P: mean 70, range 10. Class Q: mean 55, range 30. Write a full comparison.
- 2nd March 2025An item has an index number of 88 compared to its base year. State whether the value has increased or decreased, and by what percentage.
- 3rd March 2025An event has a probability of 0.2 of happening. What is the probability that it does not happen?
- 4th March 2025Using the relative frequency from the spinner above, estimate how many times it would land on blue in 300 spins.
- 5th March 2025A spinner has P(win) = 0.3. It is spun twice, independently. Find the probability of winning both times.
- 6th March 2025On a population pyramid, which axis shows the age groups?
- 7th March 2025A box plot shows a long whisker on the left and a short whisker on the right, with the median close to the right of the box. What type of skew does this suggest?
- 8th March 2025A survey of 30 shoppers out of 900 in a store found the mean amount spent was 18.50 pounds. What is the best estimate of the mean amount spent by all 900 shoppers?
- 9th March 2025Find the median of 8, 3, 15, 3, 10.
- 10th March 2025A school of 600 students wants a sample of 30. A teacher decides to only survey students in her own class of 30. State one problem with this method.
- 11th March 2025A scientist tests a new plant food but only uses it on the healthiest-looking plants. Explain why this is a flawed design.
- 12th March 2025The frequencies for four class intervals are 6, 9, 11, 4. Find the total number of data values.
- 13th March 2025In a pie chart representing 120 people, 30 people chose 'Yes'. What angle represents 'Yes'?
- 14th March 2025A Venn diagram shows 40 people: 22 own a car, 15 own a bike, 6 own both. Find the probability a random person owns neither.
- 15th March 2025A scatter graph shows points scattered with no clear pattern. What type of correlation does this show?
- 16th March 2025A researcher finds that towns with more fire engines have more fire damage, and concludes that fire engines cause fire damage. Identify the flaw in this reasoning and suggest the true common cause.
- 17th March 2025Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
- 18th March 2025What is a pilot survey?
- 19th March 2025Is 'height of a plant in cm' discrete or continuous data?
- 20th March 2025Three groups have 8 items with mean 10, 12 items with mean 15, and 5 items with mean 20. Find the combined mean.
- 21st March 2025Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?
- 22nd March 2025A bar chart uses a scale where each small square represents 2 people. A bar is 7 squares tall. How many people does the bar represent?
- 23rd March 2025A stem-and-leaf row, with key '3|1 means 31', is '3|0 2 4 4 7 9'. Find the median of these six values.
- 24th March 2025A frequency table has class frequencies 5, 9, 14, 7 for four consecutive classes. Find the cumulative frequency of the third class.
- 25th March 2025A choropleth map of rainfall uses two different hues (for example yellow to red) rather than one hue getting darker. Why can this style of shading be a problem?
- 26th March 2025In a class of 30 students, a student's mark is at the 90th percentile. Roughly how many students scored less than or equal to that mark?
- 27th March 2025Data on 200 students' exam scores is in a spreadsheet. Give one advantage of using a spreadsheet rather than calculating the mean and range by hand.
- 28th March 2025Which stage of the statistical enquiry cycle comes immediately after collecting the data?
- 29th March 2025A student uses figures from a government website for her project. Is this primary or secondary data?
- 30th March 2025Find the median of: 3, 5, 8, 10.
- 31st March 2025Two rows of a pictogram show 4.5 symbols and 3.5 symbols, with a key of 1 symbol = 20 pounds. Work out the combined total for both rows.