Statistics

Statistics What is the formula for the mean of grouped data using the direct method?a) x=∑f∑xx = frac{sum f}{sum x} b) x=∑fx∑fx = frac{sum fx}{sum f} c) x=∑f2∑fxx = frac{sum f^2}{sum fx} d) x=∑x∑fx = frac{sum x}{sum f} x=∑f∑xAnswer: b The sum of the frequencies in a frequency distribution is called:a) Modeb) Medianc) Cumulative frequencyd) […]