Daily Practice · Foundation
April 2001 5-a-day
Printing for a group?
The batch download puts all 2 tiers' April 2001 sheets in a single PDF, each tier behind its own divider page - 60 sheets in one file.
Every sheet in April 2001
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2001A 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?
- 2nd April 2001Find the median of 8, 3, 15, 3, 10.
- 3rd April 2001A 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.
- 4th April 2001A scientist tests a new plant food but only uses it on the healthiest-looking plants. Explain why this is a flawed design.
- 5th April 2001The frequencies for four class intervals are 6, 9, 11, 4. Find the total number of data values.
- 6th April 2001In a pie chart representing 120 people, 30 people chose 'Yes'. What angle represents 'Yes'?
- 7th April 2001A Venn diagram shows 40 people: 22 own a car, 15 own a bike, 6 own both. Find the probability a random person owns neither.
- 8th April 2001A scatter graph shows points scattered with no clear pattern. What type of correlation does this show?
- 9th April 2001A 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.
- 10th April 2001Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
- 11th April 2001What is a pilot survey?
- 12th April 2001Is 'height of a plant in cm' discrete or continuous data?
- 13th April 2001Three groups have 8 items with mean 10, 12 items with mean 15, and 5 items with mean 20. Find the combined mean.
- 14th April 2001Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?
- 15th April 2001A 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?
- 16th April 2001A 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.
- 17th April 2001A frequency table has class frequencies 5, 9, 14, 7 for four consecutive classes. Find the cumulative frequency of the third class.
- 18th April 2001A 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?
- 19th April 2001In 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?
- 20th April 2001Data 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.
- 21st April 2001Which stage of the statistical enquiry cycle comes immediately after collecting the data?
- 22nd April 2001A student uses figures from a government website for her project. Is this primary or secondary data?
- 23rd April 2001Find the median of: 3, 5, 8, 10.
- 24th April 2001Two 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.
- 25th April 2001Using two fair six-sided dice added together, find P(total is 7).
- 26th April 2001Two frequency polygons are drawn on the same axes for boys' and girls' test scores. What feature of the graphs shows which group generally scored higher?
- 27th April 2001A time series graph generally slopes upward from left to right over several years. What is this called?
- 28th April 2001Out of 600 drivers who used a phone while driving, 24 had an accident that year, compared with 9 out of 900 drivers who did not use a phone. Calculate the risk of an accident for each group.
- 29th April 2001In a survey of 40 students, 25 like Maths. Of those 25, 18 also like Science. Find P(likes Science given likes Maths).
- 30th April 2001A bar chart's vertical axis runs from 0 to 10 in equal steps of 2. Is this axis likely to be misleading?