Daily Practice · Foundation
March 2011 5-a-day
Printing for a group?
The batch download puts all 2 tiers' March 2011 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in March 2011
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2011A researcher wants a sample of 50 from a population of 500 using systematic sampling, with a random start of 4. List the first three people selected.
- 2nd March 2011What is a control group used for?
- 3rd March 2011A grouped frequency table has intervals of unequal width, 0 <= x < 10 and 10 <= x < 40. Explain why this could make the table misleading when drawing a histogram.
- 4th March 2011A pie chart represents 200 people. One sector has an angle of 45 degrees. How many people does it represent?
- 5th March 2011Out of 25 pupils, 12 like football, 9 like tennis, and 4 like both. How many like neither sport?
- 6th March 2011A scatter graph shows points that generally rise from bottom left to top right. What type of correlation does this show?
- 7th March 2011A scatter graph shows that as temperature increases, the number of hot drinks sold decreases. What type of correlation is this?
- 8th March 2011For a class, the Spearman's rank correlation coefficient between shoe size and spelling test score is rs = 0.15. Describe the correlation.
- 9th March 2011A company pilots its customer feedback survey on 20 customers before sending it to all 5000 customers. Explain why using only 20 people is still useful.
- 10th March 2011A student uses last year's census results for her project instead of running her own survey. Is this primary or secondary data?
- 11th March 2011A class of 15 students has a mean score of 30. When combined with another class of 25 students, the combined mean of all 40 students is 40. Find the mean score of the second class.
- 12th March 2011A survey of favourite colours gives: Red 6, Blue 9, Green 4, Yellow 5. How many people were surveyed in total?
- 13th March 2011A bar chart shows the bar for 'Bus' with height 40 and the bar for 'Walk' with height 25. How many more pupils travel by bus than walk?
- 14th March 2011A stem-and-leaf diagram has rows: 0|5 8, 1|2 2 6, 2|1. How many data values are there in total?
- 15th March 2011For 80 data values, at what cumulative frequency do you read across to find the lower quartile?
- 16th March 2011Two neighbouring regions on a choropleth map are shaded the same colour. What can you conclude about their values?
- 17th March 2011Which percentile is the same as the median?
- 18th March 2011A spreadsheet shows the formula =SUM(F1:F5)/COUNT(F1:F5) in cell F6. What statistical measure does this formula calculate?
- 19th March 2011State two things that should be decided during the planning stage of the enquiry cycle.
- 20th March 2011State whether interviewing shoppers face-to-face about their favourite supermarket is primary or secondary data collection.
- 21st March 2011For the ordered data 6, 9, 11, 14, 16, 18, 20, 23, 25, 28, find the interquartile range.
- 22nd March 2011A pictogram key shows 1 symbol = 6 cakes. A row has 1 symbol and a third of a symbol. How many cakes does the row represent?
- 23rd March 2011A spinner with sections A, B and C is spun alongside a fair coin. How many outcomes are in the sample space, and what is P(getting C and Heads)?
- 24th March 2011A class interval is 20-30 with frequency 8. Give the coordinates of the point plotted for this class.
- 25th March 2011A time series shows sales peaking every December for five years in a row. What is this repeating pattern called?
- 26th March 2011Express a risk of 1/20 as a percentage.
- 27th March 2011A box has 4 chocolate and 6 plain biscuits. One biscuit is eaten (it was chocolate), then a second is taken at random. Find P(second is chocolate given first was chocolate).
- 28th March 2011A pictogram uses one whole apple symbol to represent 10 apples sold, but one row shows a half apple symbol with no key given for partial symbols. Why could this be misleading?
- 29th March 2011Find the midpoint of the class interval 10-20.
- 30th March 2011A survey question offers the response options 'Never, Sometimes, Always'. State one improvement that could be made.
- 31st March 2011Find the 3-point moving average of 10, 14, 18.