Daily Practice · Foundation
August 2015 5-a-day
Printing for a group?
The batch download puts all 2 tiers' August 2015 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in August 2015
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 2015In a data set of 200 values, at what position, counting from the smallest, would you expect to find the 25th percentile?
- 2nd August 2015Which formula finds the highest value in the range E1 to E30?
- 3rd August 2015A researcher draws a bar chart from her results. Which stage of the cycle is this?
- 4th August 2015Give one advantage of using a questionnaire to collect data.
- 5th August 2015Find the median of: 4, 7, 9, 12, 15.
- 6th August 2015A pictogram key shows 1 symbol = 10 pupils. A row has 3 full symbols. How many pupils does the row represent?
- 7th August 2015Two fair six-sided dice are rolled and the scores are multiplied together. How many cells are in the sample space diagram?
- 8th August 2015What value do you plot on the horizontal axis for each class of a frequency polygon?
- 9th August 2015A time series of monthly temperatures shows one May with a temperature far below every other May on record. What might this value be called?
- 10th August 2015In a trial, 3 out of 150 patients taking a new drug had side effects. Write this risk in '1 in n' form.
- 11th August 2015A drawer has 7 black socks and 5 white socks. Two socks are taken without replacement. Find P(second sock is black given the first sock was black).
- 12th August 2015A line graph's horizontal (time) axis has unequal gaps between the years labelled: 2010, 2011, 2015, 2016. Why could this mislead a reader?
- 13th August 2015The table shows weights, in kg, of 20 parcels: 0-5 (freq 4), 5-10 (freq 10), 10-15 (freq 6). Estimate the mean weight.
- 14th August 2015Rewrite the response options '0-5, 5-10, 10-15' so that they no longer overlap.
- 15th August 2015A series of 4-point moving averages is 45, 48, 52, 55. Describe the trend shown by these values.
- 16th August 2015A game has four mutually exclusive outcomes: win, draw, lose, abandoned. P(win) = 0.45, P(draw) = 0.2, P(abandoned) = 0.05. Find P(lose).
- 17th August 2015State one reason why a histogram has no gaps between its bars, unlike a bar chart.
- 18th August 2015Box plot A has a median of 50 and box plot B has a median of 42, for the same type of data. What does this tell you about the two data sets?
- 19th August 2015A shop records daily sales in pounds: 340, 355, 360, 348, 2, 352. Which value looks like a data entry error?
- 20th August 2015A town of population 10,000 records 20 births in a year. Find the crude birth rate per 1000 people.
- 21st August 2015A researcher wants a stratified sample of 30 from a population of 300 split into three regions: North (90 people), South (150 people) and East (60 people). She actually samples 9 from the North, 14 from the South and 7 from the East. Show whether her sample is correctly stratified, stating the correct numbers if not.
- 22nd August 2015Using the same table (0:4, 1:10, 2:4, 3:2), find the median number of siblings.
- 23rd August 2015Data set X has a range of 12 and data set Y has a range of 5. Which data set is more consistent?
- 24th August 2015An index number is 140 with a base value of 20. Find this year's value.
- 25th August 2015A bag has 4 yellow and 6 white balls. What is P(picking a yellow ball)?
- 26th August 2015A dice is rolled 120 times and shows a 6 on 15 of those rolls. Find the relative frequency of rolling a 6.
- 27th August 2015A bag has 4 green and 6 yellow balls. One ball is drawn, replaced, then a second is drawn. Find P(both yellow).
- 28th August 2015A pyramid has a wide base and a narrow top. What does this suggest about the population?
- 29th August 2015A distribution has a long tail of high values on the right. What type of skew is this?
- 30th August 2015A quality inspector samples 120 items from a batch of 15000 and finds 3 defective, but the sample was taken only from items made in the last hour of the day. Explain why her estimate might not be reliable, and give the estimate assuming the sample were representative.
- 31st August 2015Find the mode of 5, 6, 5, 8, 6, 6, 9.