Daily Practice · Foundation
March 2008 5-a-day
Printing for a group?
The batch download puts all 2 tiers' March 2008 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in March 2008
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2008A box plot shows minimum 4 and maximum 36, with median 20. State the range of the data.
- 2nd March 2008A data set of ages is: 12, 13, 12, 14, 13, 99. Which value is most likely an outlier?
- 3rd March 2008A city's population grows from 50,000 to 52,000 in one year. Find the percentage rate of change.
- 4th March 2008A company has 60 male and 90 female employees (150 total). A stratified sample of 30 employees is taken. How many males should be sampled?
- 5th March 2008Using the same table (0:4, 1:10, 2:4, 3:2), find the total number of students.
- 6th March 2008Two classes sit the same test. Class P: mean 70, range 10. Class Q: mean 55, range 30. Write a full comparison.
- 7th March 2008An item has an index number of 88 compared to its base year. State whether the value has increased or decreased, and by what percentage.
- 8th March 2008An event has a probability of 0.2 of happening. What is the probability that it does not happen?
- 9th March 2008Using the relative frequency from the spinner above, estimate how many times it would land on blue in 300 spins.
- 10th March 2008A spinner has P(win) = 0.3. It is spun twice, independently. Find the probability of winning both times.
- 11th March 2008On a population pyramid, which axis shows the age groups?
- 12th March 2008A 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?
- 13th March 2008A 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?
- 14th March 2008Find the median of 8, 3, 15, 3, 10.
- 15th March 2008A 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.
- 16th March 2008A scientist tests a new plant food but only uses it on the healthiest-looking plants. Explain why this is a flawed design.
- 17th March 2008The frequencies for four class intervals are 6, 9, 11, 4. Find the total number of data values.
- 18th March 2008In a pie chart representing 120 people, 30 people chose 'Yes'. What angle represents 'Yes'?
- 19th March 2008A Venn diagram shows 40 people: 22 own a car, 15 own a bike, 6 own both. Find the probability a random person owns neither.
- 20th March 2008A scatter graph shows points scattered with no clear pattern. What type of correlation does this show?
- 21st March 2008A 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.
- 22nd March 2008Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
- 23rd March 2008What is a pilot survey?
- 24th March 2008Is 'height of a plant in cm' discrete or continuous data?
- 25th March 2008Three groups have 8 items with mean 10, 12 items with mean 15, and 5 items with mean 20. Find the combined mean.
- 26th March 2008Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?
- 27th March 2008A 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?
- 28th March 2008A 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.
- 29th March 2008A frequency table has class frequencies 5, 9, 14, 7 for four consecutive classes. Find the cumulative frequency of the third class.
- 30th March 2008A 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?
- 31st March 2008In 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?