Marriage age 2007. Weddings are one of the fastest growing businesses; about $40 billion is spent on weddings in the United States each year. But demographics may be changing, and this could affect wedding retailers’ marketing plans. Is there evidence that the age at which women get married has changed over the past 100 years? The scatterplot shows the trend in age at first marriage for American women. (www.census.gov)

a) Do you think there is a clear pattern? Describe the trend.

b) Is the association strong?

c) Is the correlation high? Explain.

d) Do you think a linear model is appropriate for these data? Explain.

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Women's Age at First Marriage (years) 25.00 23.75- 22.50 21.25 1890 1920 1950 1980 Year