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Tabletsprepared with microcrystalline cellulose withthe largest mean particle size (100 Âµm; AvicelPH-102) presented higher hardness, lower fri-ability and higher amount of drug released thanthose prepared with Avicel PH-101 (mean parti-cle size of 50 Âµm).
Column A uses the formula, =(A2+A3+A4+A5)/4, to find the average. Be careful when choosing AVERAGEIF() because it ignores empty cells and that might not be what you want either. If you need a formula that that doesn't ignore empty cells or if you're still using Excel 2003, you can use a formula in the following form: