Daily Practice · Foundation
June 1999 5-a-day
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The batch download puts all 2 tiers' June 1999 sheets in a single PDF, each tier behind its own divider page - 60 sheets in one file.
Every sheet in June 1999
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1999Box 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?
- 2nd June 1999A shop records daily sales in pounds: 340, 355, 360, 348, 2, 352. Which value looks like a data entry error?
- 3rd June 1999A town of population 10,000 records 20 births in a year. Find the crude birth rate per 1000 people.
- 4th June 1999A 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.
- 5th June 1999Using the same table (0:4, 1:10, 2:4, 3:2), find the median number of siblings.
- 6th June 1999Data set X has a range of 12 and data set Y has a range of 5. Which data set is more consistent?
- 7th June 1999An index number is 140 with a base value of 20. Find this year's value.
- 8th June 1999A bag has 4 yellow and 6 white balls. What is P(picking a yellow ball)?
- 9th June 1999A dice is rolled 120 times and shows a 6 on 15 of those rolls. Find the relative frequency of rolling a 6.
- 10th June 1999A bag has 4 green and 6 yellow balls. One ball is drawn, replaced, then a second is drawn. Find P(both yellow).
- 11th June 1999A pyramid has a wide base and a narrow top. What does this suggest about the population?
- 12th June 1999A distribution has a long tail of high values on the right. What type of skew is this?
- 13th June 1999A 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.
- 14th June 1999Find the mode of 5, 6, 5, 8, 6, 6, 9.
- 15th June 1999State one disadvantage of quota sampling.
- 16th June 1999Give one reason why participants should be assigned to groups at random.
- 17th June 1999A class interval is written 10 <= x < 20. Which of these values belong in it: 10, 20, 15?
- 18th June 1999A pie chart represents 60 people. What angle represents 1 person?
- 19th June 1999A 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?
- 20th June 1999Using the line of best fit from the previous question, estimate the y-value when x = 6.
- 21st June 1999Define correlation in your own words.
- 22nd June 1999The Spearman's rank correlation coefficient between the age of a used car and its price is rs = -0.88. Describe the correlation.
- 23rd June 1999State one change a researcher might make to a questionnaire as a result of a pilot survey.
- 24th June 1999State whether 'shoe size' is discrete or continuous, and explain why.
- 25th June 1999Group A has 18 items with mean 62. Group B has 22 items with mean 70. Find the combined mean.
- 26th June 1999A tally shows 4 full groups of five plus 2 extra marks for one category. What is the frequency?
- 27th June 1999A composite bar chart shows exam grades at a school: the bar has a section from 0 to 10 for Grade 9-7, a section from 10 to 34 for Grade 6-4, and a section from 34 to 40 for Grade 3-1. How many students got Grade 6-4?
- 28th June 1999Using the diagram from the question above, what is the mode?
- 29th June 1999A cumulative frequency graph for 80 data values is used to estimate the median. At what cumulative frequency value do you read across to the curve?
- 30th June 1999A choropleth map uses class intervals of 0-10, 10-30, 30-40 and 40-90. Why might this be misleading?