Daily Practice · Foundation
June 2018 5-a-day
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The batch download puts all 2 tiers' June 2018 sheets in a single PDF, each tier behind its own divider page - 60 sheets in one file.
Every sheet in June 2018
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 2018A column of 8 test scores is in cells D2 to D9. Give the formula for the mean score.
- 2nd June 2018Name the first stage of the statistical enquiry cycle.
- 3rd June 2018State one advantage secondary data has over primary data for a project on rainfall over the last 50 years.
- 4th June 2018A data set has Q1 = 22 and Q3 = 35. State the interquartile range and explain what it measures.
- 5th June 2018A pictogram key shows 1 symbol = 4 books. A row has 2 and a half symbols. How many books does the row represent?
- 6th June 2018Two fair coins are flipped. How many equally likely outcomes are in the sample space?
- 7th June 2018A frequency table has classes 0-10, 10-20, 20-30 with frequencies 3, 9, 6. State all three coordinates for the frequency polygon.
- 8th June 2018On a time series graph, what is always plotted on the horizontal axis?
- 9th June 2018Group A has a risk of 0.08 of an event happening; Group B has a risk of 0.02. Find the relative risk of Group A compared with Group B.
- 10th June 2018A bag has 3 red, 4 green and 5 blue balls (12 total). One ball is removed at random and is blue. A second ball is then removed. Find P(second ball is red given the first ball was blue).
- 11th June 2018A 3D pie chart is used to show market share. Explain why 3D charts can be misleading.
- 12th June 2018A table has class intervals with frequency x midpoint totals of 45, 120, 90 and frequencies 5, 8, 6. Find the estimated mean.
- 13th June 2018Explain why a pilot survey should be carried out before the full survey is sent out.
- 14th June 2018Find the 4-point moving average of 12, 16, 20, 10.
- 15th June 2018P(rain) = 0.3 and P(snow) = 0.05 on a given day, and rain and snow are mutually exclusive that day. Find P(rain or snow).
- 16th June 2018Using the same histogram, how many students scored between 10 and 30 marks?
- 17th June 2018A box plot has lower quartile 10 and upper quartile 22. Find the interquartile range.
- 18th June 2018The heights (cm) of 6 plants are: 15, 18, 16, 14, 17, 150. Find the mean of the remaining values after removing the outlier.
- 19th June 2018Explain why a crude rate is more useful than a raw total, such as the total number of deaths, when comparing two towns of different sizes.
- 20th June 2018A factory has 400 workers: 160 in production, 120 in packing and 120 in admin. A stratified sample of 50 workers is needed. Find how many should be sampled from packing.
- 21st June 2018Using the same table (0:4, 1:10, 2:4, 3:2), find the mean number of siblings.
- 22nd June 2018The mean rainfall in April was 45 mm with a range of 20 mm; in May it was 45 mm with a range of 8 mm. Compare April and May.
- 23rd June 2018A cost index for electricity, relative to the same base year, was 120 in 2021 and 150 in 2023. Find the percentage increase in the cost of electricity from 2021 to 2023 (not from the base year).
- 24th June 2018The probability that a train is late is 0.15. Out of 200 trains, how many would you expect to be late?
- 25th June 2018The probability that a machine produces a faulty item is 0.04. Out of 300 items, how many would you expect to be faulty?
- 26th June 2018A box has 3 faulty bulbs out of 10. Two bulbs are chosen without replacement. Find the probability at least one is faulty.
- 27th June 2018In a pyramid, the bars for ages 65+ are unusually long compared with younger age bands. Give one possible reason.
- 28th June 2018A data set has mean 12, median 12, mode 12. Describe its skew.
- 29th June 2018A sample of 80 light bulbs from a batch of 2000 found 4 were faulty. Estimate the number of faulty bulbs in the whole batch.
- 30th June 2018The mean of 6 numbers is 15. Five of the numbers are 10, 12, 14, 18, 20. Find the sixth number.