Daily Practice · Foundation
April 2020 5-a-day
Printing for a group?
The batch download puts all 2 tiers' April 2020 sheets in a single PDF, each tier behind its own divider page - 60 sheets in one file.
Every sheet in April 2020
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2020Rewrite the response options '0-5, 5-10, 10-15' so that they no longer overlap.
- 2nd April 2020A series of 4-point moving averages is 45, 48, 52, 55. Describe the trend shown by these values.
- 3rd April 2020A 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).
- 4th April 2020State one reason why a histogram has no gaps between its bars, unlike a bar chart.
- 5th April 2020Box 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?
- 6th April 2020A shop records daily sales in pounds: 340, 355, 360, 348, 2, 352. Which value looks like a data entry error?
- 7th April 2020A town of population 10,000 records 20 births in a year. Find the crude birth rate per 1000 people.
- 8th April 2020A 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.
- 9th April 2020Using the same table (0:4, 1:10, 2:4, 3:2), find the median number of siblings.
- 10th April 2020Data set X has a range of 12 and data set Y has a range of 5. Which data set is more consistent?
- 11th April 2020An index number is 140 with a base value of 20. Find this year's value.
- 12th April 2020A bag has 4 yellow and 6 white balls. What is P(picking a yellow ball)?
- 13th April 2020A dice is rolled 120 times and shows a 6 on 15 of those rolls. Find the relative frequency of rolling a 6.
- 14th April 2020A bag has 4 green and 6 yellow balls. One ball is drawn, replaced, then a second is drawn. Find P(both yellow).
- 15th April 2020A pyramid has a wide base and a narrow top. What does this suggest about the population?
- 16th April 2020A distribution has a long tail of high values on the right. What type of skew is this?
- 17th April 2020A 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.
- 18th April 2020Find the mode of 5, 6, 5, 8, 6, 6, 9.
- 19th April 2020State one disadvantage of quota sampling.
- 20th April 2020Give one reason why participants should be assigned to groups at random.
- 21st April 2020A class interval is written 10 <= x < 20. Which of these values belong in it: 10, 20, 15?
- 22nd April 2020A pie chart represents 60 people. What angle represents 1 person?
- 23rd April 2020A rectangle labelled 20 contains two non-overlapping circles for events A and B with 8 and 5 inside them. How many outcomes are outside both circles?
- 24th April 2020Using the line of best fit from the previous question, estimate the y-value when x = 6.
- 25th April 2020Define correlation in your own words.
- 26th April 2020The Spearman's rank correlation coefficient between the age of a used car and its price is rs = -0.88. Describe the correlation.
- 27th April 2020State one change a researcher might make to a questionnaire as a result of a pilot survey.
- 28th April 2020State whether 'shoe size' is discrete or continuous, and explain why.
- 29th April 2020Group A has 18 items with mean 62. Group B has 22 items with mean 70. Find the combined mean.
- 30th April 2020A tally shows 4 full groups of five plus 2 extra marks for one category. What is the frequency?