Daily Practice · Foundation
September 2016 5-a-day
Printing for a group?
The batch download puts all 2 tiers' September 2016 sheets in a single PDF, each tier behind its own divider page - 60 sheets in one file.
Every sheet in September 2016
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2016Using the same table (0:4, 1:10, 2:4, 3:2), find the total number of students.
- 2nd September 2016Two classes sit the same test. Class P: mean 70, range 10. Class Q: mean 55, range 30. Write a full comparison.
- 3rd September 2016An item has an index number of 88 compared to its base year. State whether the value has increased or decreased, and by what percentage.
- 4th September 2016An event has a probability of 0.2 of happening. What is the probability that it does not happen?
- 5th September 2016Using the relative frequency from the spinner above, estimate how many times it would land on blue in 300 spins.
- 6th September 2016A spinner has P(win) = 0.3. It is spun twice, independently. Find the probability of winning both times.
- 7th September 2016On a population pyramid, which axis shows the age groups?
- 8th September 2016A 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?
- 9th September 2016A 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?
- 10th September 2016Find the median of 8, 3, 15, 3, 10.
- 11th September 2016A 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.
- 12th September 2016A scientist tests a new plant food but only uses it on the healthiest-looking plants. Explain why this is a flawed design.
- 13th September 2016The frequencies for four class intervals are 6, 9, 11, 4. Find the total number of data values.
- 14th September 2016In a pie chart representing 120 people, 30 people chose 'Yes'. What angle represents 'Yes'?
- 15th September 2016A Venn diagram shows 40 people: 22 own a car, 15 own a bike, 6 own both. Find the probability a random person owns neither.
- 16th September 2016A scatter graph shows points scattered with no clear pattern. What type of correlation does this show?
- 17th September 2016A 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.
- 18th September 2016Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
- 19th September 2016What is a pilot survey?
- 20th September 2016Is 'height of a plant in cm' discrete or continuous data?
- 21st September 2016Three groups have 8 items with mean 10, 12 items with mean 15, and 5 items with mean 20. Find the combined mean.
- 22nd September 2016Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?
- 23rd September 2016A 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?
- 24th September 2016A 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.
- 25th September 2016A frequency table has class frequencies 5, 9, 14, 7 for four consecutive classes. Find the cumulative frequency of the third class.
- 26th September 2016A 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?
- 27th September 2016In 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?
- 28th September 2016Data 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.
- 29th September 2016Which stage of the statistical enquiry cycle comes immediately after collecting the data?
- 30th September 2016A student uses figures from a government website for her project. Is this primary or secondary data?