Daily Practice · Foundation
October 2005 5-a-day
Printing for a group?
The batch download puts all 2 tiers' October 2005 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in October 2005
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2005Describe, using the mean and median, how you could tell that a distribution is positively skewed without drawing a graph.
- 2nd October 2005A sample of 25 students from a school of 500 found that 5 walk to school. Estimate how many of all 500 students walk to school.
- 3rd October 2005Find the mean of 4, 7, 9, 12, 18.
- 4th October 2005A 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.
- 5th October 2005What is a control group used for?
- 6th October 2005A 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.
- 7th October 2005A pie chart represents 200 people. One sector has an angle of 45 degrees. How many people does it represent?
- 8th October 2005Out of 25 pupils, 12 like football, 9 like tennis, and 4 like both. How many like neither sport?
- 9th October 2005A scatter graph shows points that generally rise from bottom left to top right. What type of correlation does this show?
- 10th October 2005A scatter graph shows that as temperature increases, the number of hot drinks sold decreases. What type of correlation is this?
- 11th October 2005For a class, the Spearman's rank correlation coefficient between shoe size and spelling test score is rs = 0.15. Describe the correlation.
- 12th October 2005A 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.
- 13th October 2005A student uses last year's census results for her project instead of running her own survey. Is this primary or secondary data?
- 14th October 2005A 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.
- 15th October 2005A survey of favourite colours gives: Red 6, Blue 9, Green 4, Yellow 5. How many people were surveyed in total?
- 16th October 2005A 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?
- 17th October 2005A stem-and-leaf diagram has rows: 0|5 8, 1|2 2 6, 2|1. How many data values are there in total?
- 18th October 2005For 80 data values, at what cumulative frequency do you read across to find the lower quartile?
- 19th October 2005Two neighbouring regions on a choropleth map are shaded the same colour. What can you conclude about their values?
- 20th October 2005Which percentile is the same as the median?
- 21st October 2005A spreadsheet shows the formula =SUM(F1:F5)/COUNT(F1:F5) in cell F6. What statistical measure does this formula calculate?
- 22nd October 2005State two things that should be decided during the planning stage of the enquiry cycle.
- 23rd October 2005State whether interviewing shoppers face-to-face about their favourite supermarket is primary or secondary data collection.
- 24th October 2005For the ordered data 6, 9, 11, 14, 16, 18, 20, 23, 25, 28, find the interquartile range.
- 25th October 2005A 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?
- 26th October 2005A 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)?
- 27th October 2005A class interval is 20-30 with frequency 8. Give the coordinates of the point plotted for this class.
- 28th October 2005A time series shows sales peaking every December for five years in a row. What is this repeating pattern called?
- 29th October 2005Express a risk of 1/20 as a percentage.
- 30th October 2005A 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).
- 31st October 2005A 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?