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GCSE Mathematics SELF ASSESSMENT Contents: Foundation Tier UNIT 1 STATISTICS & PROBABILITY (30%) Collecting data OBJECTIVES Design a suitable question for a questionnaire Understand the difference between: primary and secondary data; discrete and continuous data Design suitable data sheets for surveys and experiments Understand about bias in sampling Understand sampling and population Deal with practical problems in data collection, such as non-response, missing or anomalous data Gather information from two-way tables Contents: Displaying data, charts and graphs OBJECTIVES Represent data as: Pictograms Pie charts (for categorical data) Bar charts and histograms (equal class intervals) Line graphs Composite and comparative bar charts Frequency polygons Stem and leaf diagrams Choose an appropriate way to display discrete, continuous and categorical data Understand the difference between a bar chart and a histogram Compare distributions shown in charts and graphs Interpret graphs and charts and draw conclusions Contents: Averages OBJECTIVES Find the mean of data given in an ungrouped frequency distribution Find the mode, median and range for a small set of data Find the modal class for grouped data n 1 , where Find the median by using 2 n is the number of items of data Find the mean from a frequency table by using ‘fx’ (extend table to extra columns) Use the midpoint of class intervals to find an estimate for the mean of grouped data Know the advantages/disadvantages of using the different measure of average Compare data sets by using statistics like averages, ranges, and frequency polygons Contents: Scatter graphs and correlation OBJECTIVES Draw and interpret a scatter graph Distinguish between positive, negative and zero correlation using a line of best fit Draw a line of best fit by eye and understand what it represents Use a line of best fit to estimate values Contents: Probability OBJECTIVES Mark events and/or probabilities on a probability scale of 0 to 1 and/or express probability in words, fractions, decimals or percentages List all the outcomes from mutually exclusive events, eg from two coins, and sample space diagrams Write down the probability associated with equally likely events, eg the probability of drawing an ace from a pack of cards Know that if the probability of an event occurring is p than the probability of it not occurring is (1 – p) Find the missing probability from a list or table (decimal or fractional values) Find estimates of probabilities by considering relative frequency in experimental results (including two-way tables) Know that the more an experiment is repeated the better the estimate of probability Add simple probabilities Estimate the number of times an event will occur, given the probability and the number of trials Contents: Integers OBJECTIVES Understand and order integers Add, subtract, multiply and divide integers Understand simple instances of BIDMAS, eg work out 12 5 – 24 8 Round whole numbers to the nearest, 10, 100, 1000, … Multiply and divide whole numbers by a given multiple of 10 Check their calculations by rounding, eg 29 31 30 30 Module 1-7 Contents: Decimals Time: 1 – 3 hours OBJECTIVES Put digits in the correct place in a decimal number Write decimals in ascending order of size Approximate decimals to a given number of decimal places or significant figures Contents: Fractions OBJECTIVES Visualise a fraction diagrammatically Understand a fraction as part of a whole Recognise and write fractions in everyday situations Write a fraction in its simplest form and recognise equivalent fractions Compare the sizes of fractions using a common denominator Write an improper fraction as a mixed number Recognise common recurring decimals can be written as exact fractions, eg 1 3 Contents: Percentages OBJECTIVES Understand that a percentage is a fraction in hundredths Write a percentage as a decimal; or as a fraction in its simplest terms Calculate the percentage (or fraction) of a given amount Find a percentage increase/decrease of an amount Use a multiplier to increase by a given percent, eg 1.10 64 increases 64 by 10% Contents: Ratio OBJECTIVES Write a ratio in its simplest form Appreciate that, eg the ratio 1:2 represents 1 and 2 of a quantity 3 3 Divide quantities in a given ratio, eg divide £20 in the ratio 2:3 Solve word problems involving ratios, eg Find the cost of 8 pencils given that 6 pencils cost 78p Contents: Introduction to algebra OBJECTIVES Distinguish the different roles played by letter symbols in algebra Understand the meaning between the words ‘equation’, ‘formula’, and expression Write a simple expression Contents: Straight line graphs BJECTIVES Draw linear graphs from tabulated data, including real-world examples Interpret linear graphs, including conversion graphs Draw and interpret graphs in the form y = mx + c (when values for m and c are given) Understand that lines are parallel when they have the same value of m Find the gradient of a straight line graph Contents: Lines and angles OBJECTIVES Measure and draw angle to the nearest degree Measure and draw line to the nearest mm Use angle properties ‘at a point’ to calculate unknown angles Contents: Units and reading scales OBJECTIVES Use 12- and 24-hour clock notation Make estimates of: length; volume and capacity; weights Decide on the appropriate units to use in real life problems Read measurements from instruments: scales; analogue and digital clocks and thermometers, etc Recognise that measurements given to the nearest whole unit may be inaccurate by up to one half in either direction Convert from one metric unit to another metric unit