Question 3

Is there an apparent trend in the number of girls born over the years? How would you describe it?

There appears to be no trend in the number of girls born from 1940 to 2002.
There is initially an increase in the number of girls born, which peaks around 1960. After 1960 there is a decrease in the number of girls born, but the number begins to increase again in the early 1970s. Overall the trend is an increase in the number of girls born in the US since the 1940s.
There is initially an increase in the number of girls born. This number peaks around 1960 and then after 1960 the number of girls born decreases.
The number of girls born has decreased over time.
There is an initial increase in the number of girls born but this number appears to level around 1960 and not change since then.