The envelopes of letters received by an office one morning were measured The widths in centimetres were as follows 23 8 15 3 20 5 15 4 19 2 20 0 24 7 12 8 9 7 18 9 24 4 13 1 15 9 12 2 20 6 6 9 20 0 11 3 10 0 16 1 Width 5 w 10 10 w 15 15 w 20 20 w 25 Click the tally column to tally off the data and complete the frequency table You can click the numbers above as you tally them to cross them off How many envelopes were measured altogether How many envelopes measured less than 20 cm How many envelopes measured 20 cm or more Tally Frequency 000 1 1 2