757 prompts matching "IGCSE Maths Y10: Setting out a congruence proof — Exam Technique"
Practice set: Solving simultaneous equations graphically
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Real-life Nigeria: Where a graphical method beats an algebraic one
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Quiz me: Writing inequalities from a described set of constraints
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Spot my mistake: Shading the wrong side of a boundary line
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WAEC pitfalls: Ignoring the non-negativity constraints
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Practice set: Finding the maximum of an objective function
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Real-life Nigeria: A production mix problem for a small business
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Quiz me: Building a cumulative frequency table
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Spot my mistake: Plotting cumulative frequency at the class midpoint
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WAEC pitfalls: Reading the quartiles off the wrong axis
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Practice set: Estimating quartiles and percentiles from an ogive
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Real-life Nigeria: Comparing two distributions from their ogives
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Quiz me: Calculating the mean before finding the deviations
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Spot my mistake: Letting positive and negative deviations cancel
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WAEC pitfalls: Dividing by the wrong number of items
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Practice set: The mean deviation of grouped data
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Real-life Nigeria: Mean deviation set beside standard deviation
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Quiz me: Calculating the angle for each sector of a pie chart
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Spot my mistake: Drawing sector angles that do not total 360 degrees
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WAEC pitfalls: Comparing two pie charts of different totals directly
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