Daily Practice · Foundation
September 1997 5-a-day
Printing for a group?
The batch download puts all 2 tiers' September 1997 sheets in a single PDF, each tier behind its own divider page - 60 sheets in one file.
Every sheet in September 1997
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1997Two variables have a correlation coefficient close to 0. What does this suggest?
- 2nd September 1997The Spearman's rank correlation coefficient between temperature and ice cream sales for 8 days is rs = 0.95. Describe the correlation.
- 3rd September 1997A pilot survey shows that many respondents left a question blank. What might this suggest about the question?
- 4th September 1997A researcher records the exact temperature of 30 cups of tea to the nearest 0.1 degrees C. State the type of data, giving two features.
- 5th September 1997Group A has 4 items with mean 12. Group B has 4 items with mean 20. Find the combined mean.
- 6th September 1997The number of pets owned by 15 households, recorded as collected, is: 0,1,2,1,0,3,1,2,0,1,1,2,0,1,2. Complete a frequency table for the number of pets and state the total frequency.
- 7th September 1997A bar chart shows 3 bars: Dogs 12, Cats 9, Rabbits 5. How many pets are shown in total?
- 8th September 1997Using the same diagram (0|5 8, 1|2 2 6, 2|1), what is the range?
- 9th September 1997A cumulative frequency graph shows that a cumulative frequency of 45 corresponds to a value of 60 on the horizontal axis, out of 90 total data values. How many data values are above 60?
- 10th September 1997What is the purpose of the key on a choropleth map?
- 11th September 1997A data set of 50 exam scores has the 20th percentile at 42 marks and the 80th percentile at 78 marks. Explain what these two values tell you about the middle 60% of scores.
- 12th September 1997Which spreadsheet formula would you use to find the total of the values in cells B2 to B20?
- 13th September 1997A supermarket wants to know if a new till layout reduces queuing time. Write a suitable statistical question for the start of the enquiry cycle.
- 14th September 1997Give one disadvantage of an observation study.
- 15th September 1997Two classes have the same median test score. Class A has IQR = 6 and Class B has IQR = 15. Which class's scores are more consistent, and why?
- 16th September 1997A pictogram has a key of 1 symbol = 4 people. A town has 22 people who play chess. How many symbols, including any part-symbol, should be drawn?
- 17th September 1997Using two fair six-sided dice added together, how many ways can you score a total of 7?
- 18th September 1997Find the midpoint of the class interval 10-20.
- 19th September 1997A company's yearly profits are 10, 12, 11, 15, 14 thousand pounds over five years. Describe the general trend.
- 20th September 1997Out of 200 people who ate a certain meal, 10 became ill. What is the risk of becoming ill, as a fraction in its simplest form?
- 21st September 1997A class has 12 boys and 8 girls. One student, a girl, leaves the room. A second student is then chosen at random from those remaining. Find P(second student chosen is a girl given the first was a girl).
- 22nd September 1997A newspaper bar chart showing company profit over 5 years has no vertical axis labels or scale, just bars of different heights. Explain the problem with this.
- 23rd September 1997Find the midpoint of the class interval 30-50.
- 24th September 1997What is wrong with the question 'Do you not think school lunches are too expensive?'
- 25th September 1997Find the 3-point moving average of 14, 18, 20.
- 26th September 1997A card is drawn at random from a normal 52-card pack. Find P(drawing a King or a Queen).
- 27th September 1997A histogram for exam scores has bars of equal width 10 marks, covering 0-10, 10-20, 20-30, 30-40, with heights 2, 8, 15, 5. How many students took the exam?
- 28th September 1997Name the five values needed to draw a box plot.
- 29th September 1997Give one reason you might choose to keep an outlier in a data set rather than remove it.
- 30th September 1997A region records 90 crimes in a population of 45,000. Find the crude crime rate per 1000 people.