Daily Practice · Foundation
February 2022 5-a-day
Printing for a group?
The batch download puts all 2 tiers' February 2022 sheets in a single PDF, each tier behind its own divider page - 56 sheets in one file.
Every sheet in February 2022
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2022A spinner has P(win) = 0.3. It is spun twice, independently. Find the probability of winning both times.
- 2nd February 2022On a population pyramid, which axis shows the age groups?
- 3rd February 2022A 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?
- 4th February 2022A 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?
- 5th February 2022Find the median of 8, 3, 15, 3, 10.
- 6th February 2022A 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.
- 7th February 2022A scientist tests a new plant food but only uses it on the healthiest-looking plants. Explain why this is a flawed design.
- 8th February 2022The frequencies for four class intervals are 6, 9, 11, 4. Find the total number of data values.
- 9th February 2022In a pie chart representing 120 people, 30 people chose 'Yes'. What angle represents 'Yes'?
- 10th February 2022A Venn diagram shows 40 people: 22 own a car, 15 own a bike, 6 own both. Find the probability a random person owns neither.
- 11th February 2022A scatter graph shows points scattered with no clear pattern. What type of correlation does this show?
- 12th February 2022A 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.
- 13th February 2022Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
- 14th February 2022What is a pilot survey?
- 15th February 2022Is 'height of a plant in cm' discrete or continuous data?
- 16th February 2022Three groups have 8 items with mean 10, 12 items with mean 15, and 5 items with mean 20. Find the combined mean.
- 17th February 2022Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?
- 18th February 2022A 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?
- 19th February 2022A 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.
- 20th February 2022A frequency table has class frequencies 5, 9, 14, 7 for four consecutive classes. Find the cumulative frequency of the third class.
- 21st February 2022A 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?
- 22nd February 2022In 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?
- 23rd February 2022Data 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.
- 24th February 2022Which stage of the statistical enquiry cycle comes immediately after collecting the data?
- 25th February 2022A student uses figures from a government website for her project. Is this primary or secondary data?
- 26th February 2022Find the median of: 3, 5, 8, 10.
- 27th February 2022Two 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.
- 28th February 2022Using two fair six-sided dice added together, find P(total is 7).