Describing percentages

13.1% of young men and 23.1% of young women who had married said that they ...... Returned surveys from 34 radiologists yielded a 34% response rate. The response rate was 60% at six months and 56% at 12 months. East Anglia had the lowest proportion of lone parents at only 14 per cent. Since 1981, England has experienced an 89 % increase in crime. The mean income of the bottom 20 percent of U.S. families declined from $10,716 in 1970 to ....... A study in Java found that of 2,558 abortions, 58% were in young women aged 15-24, of whom 62% were ..... He also noted that less than 10% of the articles included in his study cited ...... In 1960 just over 5% of live births in 1960 were outside marriage.

Describing averages

This figure can be seen as the average life expectancy at various ages. The proposed model suggests a steep decline in mean life expectancy ...... Roman slaves probably had a lower than average life expectancy. The average of 12 observations in the X, Y and Z is 19.2 mgs/m ..... The mean score for the two trials was subjected to multivariate analysis of variance to determine ...... The mean income of the bottom 20 percent of U.S. families declined from $10,716 in 1970 to .......

Describing ranges

The evidence shows that life expectancy from birth lies in the range of twenty to thirty years. Between 575 and 590 metres depth the sea floor is extremely flat, with an average slope of only 1 : 400 The mean income of the bottom 20 percent of U.S. families declined from $10,716 in 1970 to $9,833 in 1990. The respondents had practiced for an average of 15 years (range 6 to 35 years) The participants were aged 19 to 25 and were from both rural and urban backgrounds. They calculated ranges of journal use from 10.7%–36.4% for the humanities, 25%–57% for the ...... Rates of decline ranged from 2.71– 0.08 cm day-1 (Table 11) with a mean of 0.97 cm day-1.