Daily Practice · Foundation
January 2002 5-a-day
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The batch download puts all 2 tiers' January 2002 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in January 2002
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2002Two classes sit the same test. Class P: mean 70, range 10. Class Q: mean 55, range 30. Write a full comparison.
- 2nd January 2002An 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 January 2002An event has a probability of 0.2 of happening. What is the probability that it does not happen?
- 4th January 2002Using the relative frequency from the spinner above, estimate how many times it would land on blue in 300 spins.
- 5th January 2002A spinner has P(win) = 0.3. It is spun twice, independently. Find the probability of winning both times.
- 6th January 2002On a population pyramid, which axis shows the age groups?
- 7th January 2002A 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 January 2002A 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 January 2002Find the median of 8, 3, 15, 3, 10.
- 10th January 2002A 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 January 2002A scientist tests a new plant food but only uses it on the healthiest-looking plants. Explain why this is a flawed design.
- 12th January 2002The frequencies for four class intervals are 6, 9, 11, 4. Find the total number of data values.
- 13th January 2002In a pie chart representing 120 people, 30 people chose 'Yes'. What angle represents 'Yes'?
- 14th January 2002A 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 January 2002A scatter graph shows points scattered with no clear pattern. What type of correlation does this show?
- 16th January 2002A 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 January 2002Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
- 18th January 2002What is a pilot survey?
- 19th January 2002Is 'height of a plant in cm' discrete or continuous data?
- 20th January 2002Three groups have 8 items with mean 10, 12 items with mean 15, and 5 items with mean 20. Find the combined mean.
- 21st January 2002Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?
- 22nd January 2002A 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 January 2002A 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 January 2002A frequency table has class frequencies 5, 9, 14, 7 for four consecutive classes. Find the cumulative frequency of the third class.
- 25th January 2002A 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 January 2002In 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 January 2002Data 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 January 2002Which stage of the statistical enquiry cycle comes immediately after collecting the data?
- 29th January 2002A student uses figures from a government website for her project. Is this primary or secondary data?
- 30th January 2002Find the median of: 3, 5, 8, 10.
- 31st January 2002Two 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.