Daily Practice · Foundation
July 2008 5-a-day
Printing for a group?
The batch download puts all 2 tiers' July 2008 sheets in a single PDF, each tier behind its own divider page - 62 sheets in one file.
Every sheet in July 2008
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 2008A 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?
- 2nd July 2008What is the purpose of the key on a choropleth map?
- 3rd July 2008A 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.
- 4th July 2008Which spreadsheet formula would you use to find the total of the values in cells B2 to B20?
- 5th July 2008A supermarket wants to know if a new till layout reduces queuing time. Write a suitable statistical question for the start of the enquiry cycle.
- 6th July 2008Give one disadvantage of an observation study.
- 7th July 2008Two 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?
- 8th July 2008A 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?
- 9th July 2008Using two fair six-sided dice added together, how many ways can you score a total of 7?
- 10th July 2008Find the midpoint of the class interval 10-20.
- 11th July 2008A company's yearly profits are 10, 12, 11, 15, 14 thousand pounds over five years. Describe the general trend.
- 12th July 2008Out 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?
- 13th July 2008A 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).
- 14th July 2008A 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.
- 15th July 2008Find the midpoint of the class interval 30-50.
- 16th July 2008What is wrong with the question 'Do you not think school lunches are too expensive?'
- 17th July 2008Find the 3-point moving average of 14, 18, 20.
- 18th July 2008A card is drawn at random from a normal 52-card pack. Find P(drawing a King or a Queen).
- 19th July 2008A 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?
- 20th July 2008Name the five values needed to draw a box plot.
- 21st July 2008Give one reason you might choose to keep an outlier in a data set rather than remove it.
- 22nd July 2008A region records 90 crimes in a population of 45,000. Find the crude crime rate per 1000 people.
- 23rd July 2008A youth club has 45 members under 13 and 75 members aged 13 to 17 (120 total). A stratified sample of 40 members is needed. How many aged 13 to 17 should be sampled?
- 24th July 2008A different table shows test scores out of 5 for 30 students: 1 (freq 3), 2 (freq 5), 3 (freq 9), 4 (freq 8), 5 (freq 5). Find the mean score.
- 25th July 2008Class A has a mean test score of 62 and Class B has a mean of 58. Which class did better on average?
- 26th July 2008A rent index shows 2019 = 100 and 2024 = 118. Find the actual rent in 2024 if the 2019 rent was 650 pounds.
- 27th July 2008A fair coin is flipped once. What is P(heads)?
- 28th July 2008Student A rolls a dice 20 times and gets a 6 four times. Student B rolls the same dice 300 times and gets a 6 forty-eight times. Whose relative frequency is a more reliable estimate of the true probability, and what is it?
- 29th July 2008A coin is flipped twice. Find the probability of getting two heads.
- 30th July 2008A pyramid is roughly the same width all the way up, with only a slightly narrower top. What does this suggest?
- 31st July 2008A distribution has mean = mode = median. What does this suggest about its shape?