Daily Practice · Foundation
January 2005 5-a-day
Printing for a group?
The batch download puts all 2 tiers' January 2005 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in January 2005
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2005A scatter graph shows that as temperature increases, the number of hot drinks sold decreases. What type of correlation is this?
- 2nd January 2005For a class, the Spearman's rank correlation coefficient between shoe size and spelling test score is rs = 0.15. Describe the correlation.
- 3rd January 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.
- 4th January 2005A student uses last year's census results for her project instead of running her own survey. Is this primary or secondary data?
- 5th January 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.
- 6th January 2005A survey of favourite colours gives: Red 6, Blue 9, Green 4, Yellow 5. How many people were surveyed in total?
- 7th January 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?
- 8th January 2005A stem-and-leaf diagram has rows: 0|5 8, 1|2 2 6, 2|1. How many data values are there in total?
- 9th January 2005For 80 data values, at what cumulative frequency do you read across to find the lower quartile?
- 10th January 2005Two neighbouring regions on a choropleth map are shaded the same colour. What can you conclude about their values?
- 11th January 2005Which percentile is the same as the median?
- 12th January 2005A spreadsheet shows the formula =SUM(F1:F5)/COUNT(F1:F5) in cell F6. What statistical measure does this formula calculate?
- 13th January 2005State two things that should be decided during the planning stage of the enquiry cycle.
- 14th January 2005State whether interviewing shoppers face-to-face about their favourite supermarket is primary or secondary data collection.
- 15th January 2005For the ordered data 6, 9, 11, 14, 16, 18, 20, 23, 25, 28, find the interquartile range.
- 16th January 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?
- 17th January 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)?
- 18th January 2005A class interval is 20-30 with frequency 8. Give the coordinates of the point plotted for this class.
- 19th January 2005A time series shows sales peaking every December for five years in a row. What is this repeating pattern called?
- 20th January 2005Express a risk of 1/20 as a percentage.
- 21st January 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).
- 22nd January 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?
- 23rd January 2005Find the midpoint of the class interval 10-20.
- 24th January 2005A survey question offers the response options 'Never, Sometimes, Always'. State one improvement that could be made.
- 25th January 2005Find the 3-point moving average of 10, 14, 18.
- 26th January 2005A bag has only red, blue and green counters. P(red) = 0.5 and P(blue) = 0.2. Find P(green).
- 27th January 2005A histogram has bars of equal width. True or false: the height of each bar represents the frequency for that class.
- 28th January 2005A box plot shows minimum 4 and maximum 36, with median 20. State the range of the data.
- 29th January 2005A data set of ages is: 12, 13, 12, 14, 13, 99. Which value is most likely an outlier?
- 30th January 2005A city's population grows from 50,000 to 52,000 in one year. Find the percentage rate of change.
- 31st January 2005A company has 60 male and 90 female employees (150 total). A stratified sample of 30 employees is taken. How many males should be sampled?