Daily Practice · Foundation
March 2017 5-a-day
Printing for a group?
The batch download puts all 2 tiers' March 2017 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in March 2017
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2017A series of 4-point moving averages is 45, 48, 52, 55. Describe the trend shown by these values.
- 2nd March 2017A 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).
- 3rd March 2017State one reason why a histogram has no gaps between its bars, unlike a bar chart.
- 4th March 2017Box 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?
- 5th March 2017A shop records daily sales in pounds: 340, 355, 360, 348, 2, 352. Which value looks like a data entry error?
- 6th March 2017A town of population 10,000 records 20 births in a year. Find the crude birth rate per 1000 people.
- 7th March 2017A 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.
- 8th March 2017Using the same table (0:4, 1:10, 2:4, 3:2), find the median number of siblings.
- 9th March 2017Data set X has a range of 12 and data set Y has a range of 5. Which data set is more consistent?
- 10th March 2017An index number is 140 with a base value of 20. Find this year's value.
- 11th March 2017A bag has 4 yellow and 6 white balls. What is P(picking a yellow ball)?
- 12th March 2017A dice is rolled 120 times and shows a 6 on 15 of those rolls. Find the relative frequency of rolling a 6.
- 13th March 2017A bag has 4 green and 6 yellow balls. One ball is drawn, replaced, then a second is drawn. Find P(both yellow).
- 14th March 2017A pyramid has a wide base and a narrow top. What does this suggest about the population?
- 15th March 2017A distribution has a long tail of high values on the right. What type of skew is this?
- 16th March 2017A 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.
- 17th March 2017Find the mode of 5, 6, 5, 8, 6, 6, 9.
- 18th March 2017State one disadvantage of quota sampling.
- 19th March 2017Give one reason why participants should be assigned to groups at random.
- 20th March 2017A class interval is written 10 <= x < 20. Which of these values belong in it: 10, 20, 15?
- 21st March 2017A pie chart represents 60 people. What angle represents 1 person?
- 22nd March 2017A 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?
- 23rd March 2017Using the line of best fit from the previous question, estimate the y-value when x = 6.
- 24th March 2017Define correlation in your own words.
- 25th March 2017The Spearman's rank correlation coefficient between the age of a used car and its price is rs = -0.88. Describe the correlation.
- 26th March 2017State one change a researcher might make to a questionnaire as a result of a pilot survey.
- 27th March 2017State whether 'shoe size' is discrete or continuous, and explain why.
- 28th March 2017Group A has 18 items with mean 62. Group B has 22 items with mean 70. Find the combined mean.
- 29th March 2017A tally shows 4 full groups of five plus 2 extra marks for one category. What is the frequency?
- 30th March 2017A 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?
- 31st March 2017Using the diagram from the question above, what is the mode?