Daily Practice · Foundation
March 1998 5-a-day
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The batch download puts all 2 tiers' March 1998 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in March 1998
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1998Find the median of 8, 3, 15, 3, 10.
- 2nd March 1998A school of 600 students wants a sample of 30. A teacher decides to only survey students in her own class of 30. State one problem with this method.
- 3rd March 1998A scientist tests a new plant food but only uses it on the healthiest-looking plants. Explain why this is a flawed design.
- 4th March 1998The frequencies for four class intervals are 6, 9, 11, 4. Find the total number of data values.
- 5th March 1998In a pie chart representing 120 people, 30 people chose 'Yes'. What angle represents 'Yes'?
- 6th March 1998A Venn diagram shows 40 people: 22 own a car, 15 own a bike, 6 own both. Find the probability a random person owns neither.
- 7th March 1998A scatter graph shows points scattered with no clear pattern. What type of correlation does this show?
- 8th March 1998A researcher finds that towns with more fire engines have more fire damage, and concludes that fire engines cause fire damage. Identify the flaw in this reasoning and suggest the true common cause.
- 9th March 1998Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
- 10th March 1998What is a pilot survey?
- 11th March 1998Is 'height of a plant in cm' discrete or continuous data?
- 12th March 1998Three groups have 8 items with mean 10, 12 items with mean 15, and 5 items with mean 20. Find the combined mean.
- 13th March 1998Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?
- 14th March 1998A bar chart uses a scale where each small square represents 2 people. A bar is 7 squares tall. How many people does the bar represent?
- 15th March 1998A stem-and-leaf row, with key '3|1 means 31', is '3|0 2 4 4 7 9'. Find the median of these six values.
- 16th March 1998A frequency table has class frequencies 5, 9, 14, 7 for four consecutive classes. Find the cumulative frequency of the third class.
- 17th March 1998A choropleth map of rainfall uses two different hues (for example yellow to red) rather than one hue getting darker. Why can this style of shading be a problem?
- 18th March 1998In a class of 30 students, a student's mark is at the 90th percentile. Roughly how many students scored less than or equal to that mark?
- 19th March 1998Data on 200 students' exam scores is in a spreadsheet. Give one advantage of using a spreadsheet rather than calculating the mean and range by hand.
- 20th March 1998Which stage of the statistical enquiry cycle comes immediately after collecting the data?
- 21st March 1998A student uses figures from a government website for her project. Is this primary or secondary data?
- 22nd March 1998Find the median of: 3, 5, 8, 10.
- 23rd March 1998Two rows of a pictogram show 4.5 symbols and 3.5 symbols, with a key of 1 symbol = 20 pounds. Work out the combined total for both rows.
- 24th March 1998Using two fair six-sided dice added together, find P(total is 7).
- 25th March 1998Two frequency polygons are drawn on the same axes for boys' and girls' test scores. What feature of the graphs shows which group generally scored higher?
- 26th March 1998A time series graph generally slopes upward from left to right over several years. What is this called?
- 27th March 1998Out of 600 drivers who used a phone while driving, 24 had an accident that year, compared with 9 out of 900 drivers who did not use a phone. Calculate the risk of an accident for each group.
- 28th March 1998In a survey of 40 students, 25 like Maths. Of those 25, 18 also like Science. Find P(likes Science given likes Maths).
- 29th March 1998A bar chart's vertical axis runs from 0 to 10 in equal steps of 2. Is this axis likely to be misleading?
- 30th March 1998The table shows ages, in years, of 50 people at a gym: 10-20 (freq 6), 20-30 (freq 18), 30-40 (freq 16), 40-50 (freq 10). Estimate the mean age.
- 31st March 1998Give one reason why the response options '0-5, 5-10, 10-15' are a poor choice for hours of homework.