A collection of online math calculators. We have an equation solver, an equation graphing, a factoring calculator, and a derivative calculator. The purpose of this mixed methods study was to investigate the effect of a graphing calculator (GC) intervention on Grade 11 learners’ achievement in quadratic inequality problem solving.

Jun 06, 2015 · By definition, Z score is: z = x − μ σ where x is your datum, μ is the mean of your population and σ is its standard deviation. Basically, it's a measure of deviation from the mean in units of standard deviation.

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