The following is a sample of weekly wages earned by ten people working for a smallprinting and design company. 2.1 Calculate the mean weekly wage. (2) 2.2 Calculate the standard deviation of the weekly wage. (1) 2.3 Determine the percentage of workers which lie within ONE standard deviation of the mean. (4) [7]
The following table represents the heights, in centimetres, of 120 boys in a school. 1.1 Complete the cumulative frequency table in the SPECIAL ANSWER BOOK. (2) 1.2 Draw an ogive, using the diagram in the SPECIAL ANSWER BOOK, to representthe information in the table. (4) 1.3 Determine, using the ogive, the five number summary. (5) … Read more