What is statistics mainly used for?, A. Painting pictures, B. Collecting and analysing data, C. Building houses, D. Writing stories, Which stage comes first in the statistical enquiry cycle?, A. Analyse data, B. Collect data, C. Identify the problem and plan, D. Interpret results, What is a population in statistics?, A. A small group from a survey, B. A chart, C. The complete set of data being studied, D. A tally table, What is a sample?, A. The whole population, B. A subset of a population, C. A graph, D. A calculator method, Which of the following is primary data?, A. Information from a newspaper, B. Data collected by yourself, C. Internet statistics, D. Government reports, Which type of data fits into groups or categories?, A. Numerical data, B. Decimal data, C. Fraction data, D. Categorical data, Which survey question is biased?, A. How many hours do you study each night?, B. What is your favourite subject?, C. Don’t you agree that maths is the best subject?, D. How old are you?, What is the main advantage of a random sample?, A. It is always smaller, B. It is cheaper, C. Everyone has an equal chance of being selected, D. It guarantees perfect results, A teacher records the heights of students in a class. What type of data is this?, A. Categorical, B. Numerical, C. Biased, D. Secondary, Which of the following is categorical data?, A. Age, B. Height, C. Favourite colour, D. Number of goals scored, Ben rolls a dice 60 times and records the results himself. What type of data is this?, A. Secondary data, B. Biased data, C. Primary data, D. Categorical data, A survey asks only students leaving the gym if they enjoy sports. What problem may occur?, A. Accurate results, B. Random sample, C. Sampling bias, D. Numerical error, Which is the best sample for finding opinions about school lunches?, A. Only first years, B. Only students in sports teams, C. A random sample from the whole school, D. Students sitting together at lunch, Carol surveys students about the number of pets in their families. What type of data is she collecting?, A. Numerical primary data, B. Numerical secondary data, C. Categorical primary data, D. Categorical secondary data, Which value is most likely an outlier in this data set: 0, 1, 2, 1, 3, 2, 8, 1, 0?, A. 1, B. 2, C. 3, D. 8, Which method is best for surveying opinions about school uniform?, A. Ask only TY students, B. Ask students who volunteer after school, C. Ask every student in one class, D. Take a random sample from the school roll, Anita tossed a coin 50 times and recorded the result to investigate if the coin was fair. What type of data is this?, A. Secondary data, B. Biased data, C. Primary data, D. Categorical data, Which of the following is the best example of an unbiased sample?, A. Ask 60 people coming out of McDonalds one Saturday evening, B. Ask 80 students at her school, C. Ask 12 people in a small town with one take-away shop, D. Take a random sample from the whole population, Which of the following is numerical data?, A. The colour of the packet, B. The type of material the packet is made from, C. The number of tablets remaining, D. Favourite takeaway food.

Chapter 3 - Statistics

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