Marleen's measurements are between P₅₀ and P₉₀: 173 cm

_{50 90} $173$

Tussen $40$ en $50$ km.

After puberty, at about $16$ years, girls hardly grow any more.

$173$ cm

₇₀ $75$

1944 and 1978.

Not necessarily, the number of Americans may have increased.

1930-1935, 1947, 1955, 1959-1961 and 1970-1976.

Approximately $2400$ calls (an increase of 120 in 1983-1986, so $40$ per year from 1986).
Approximately $530$ packages ( an increase of 30 in 1984-1986, so $15$ per year from 1986).

See the graph.

From the wavelike behaviour of the graph.

The trend is that unemployment increases approximately by a $1000$ every year. In Jan.'95 there were $10700$ unemployed. In Jan.'04 there will be (if the trend continues) approximately19700 unemployed.

Mrt.'08: approximately $11900+13\cdot 1000=24900$.

$BMI\approx 25$

Between $70$ and $85$ kg.

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Puberty greatly influences people's growth. After that length and weight remain more or less stable.

Straight line through $(0,0)$ and $(30;97.2)$.