Daily Practice · Foundation
May 2013 5-a-day
Printing for a group?
The batch download puts all 2 tiers' May 2013 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in May 2013
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st May 2013A bag has 4 yellow and 6 white balls. What is P(picking a yellow ball)?
- 2nd May 2013A dice is rolled 120 times and shows a 6 on 15 of those rolls. Find the relative frequency of rolling a 6.
- 3rd May 2013A bag has 4 green and 6 yellow balls. One ball is drawn, replaced, then a second is drawn. Find P(both yellow).
- 4th May 2013A pyramid has a wide base and a narrow top. What does this suggest about the population?
- 5th May 2013A distribution has a long tail of high values on the right. What type of skew is this?
- 6th May 2013A 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.
- 7th May 2013Find the mode of 5, 6, 5, 8, 6, 6, 9.
- 8th May 2013State one disadvantage of quota sampling.
- 9th May 2013Give one reason why participants should be assigned to groups at random.
- 10th May 2013A class interval is written 10 <= x < 20. Which of these values belong in it: 10, 20, 15?
- 11th May 2013A pie chart represents 60 people. What angle represents 1 person?
- 12th May 2013A 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?
- 13th May 2013Using the line of best fit from the previous question, estimate the y-value when x = 6.
- 14th May 2013Define correlation in your own words.
- 15th May 2013The Spearman's rank correlation coefficient between the age of a used car and its price is rs = -0.88. Describe the correlation.
- 16th May 2013State one change a researcher might make to a questionnaire as a result of a pilot survey.
- 17th May 2013State whether 'shoe size' is discrete or continuous, and explain why.
- 18th May 2013Group A has 18 items with mean 62. Group B has 22 items with mean 70. Find the combined mean.
- 19th May 2013A tally shows 4 full groups of five plus 2 extra marks for one category. What is the frequency?
- 20th May 2013A 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?
- 21st May 2013Using the diagram from the question above, what is the mode?
- 22nd May 2013A 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?
- 23rd May 2013A choropleth map uses class intervals of 0-10, 10-30, 30-40 and 40-90. Why might this be misleading?
- 24th May 2013What percentage of data lies below the 40th percentile?
- 25th May 2013Which spreadsheet formula would you use to find how many values are in the range C1 to C50?
- 26th May 2013A researcher decides her sample size was too small after seeing her results. Which stage of the cycle does this belong to?
- 27th May 2013A question asks: 'Don't you agree that the new bus timetable is an improvement?' State what is wrong with this question.
- 28th May 2013For the ordered data 2, 4, 5, 7, 8, 9, 11, 13, 14, find the lower quartile (Q1) and upper quartile (Q3).
- 29th May 2013A pictogram shows 5 full symbols for apples sold, with a key of 1 symbol = 12 apples. How many apples were sold?
- 30th May 2013Using the two-coin sample space, find P(exactly one head).
- 31st May 2013A frequency polygon has classes of unequal width: 0-10 and 10-30. Explain why comparing the heights of the two plotted points directly can be misleading.