Question

draw a line graph to illustrate this informa- tion and comment on it, giving reasons for the trend it shows. why do you think that the infant mortality was given as a rate? (c) using the line graph, answer the following questions: (i) during which period was there an increase in the infant mortality rate? (ii) during which period was there the largest decrease in the infant mortality rate? (iii) state the largest decrease in the infant mortality rate.

Answer 1

Part (a)

First, we need to make a line graph that relates the year and the mortality rate as follows

So, we see that the infant mortality rate decreases over the years.

Part (b)

why do you think that infant mortality was given as a rate?

Infant mortality is given as a rate because the amount of children borns each year is different, so comparing the numbers without a rate is not fair.

Part (c)

(i) during which period was there an increase in the infant mortality rate?

Taking into account the graph, we can see that the increase occurs between 1939 and 1944 when the rate goes from 93 to 97.

(ii) during which period was there the largest decrease in the infant mortality rate?

The largest decrease in infant mortality occurs when the line between two points is the steepest, so it occurs between 1944 and 1949 when the rate goes from 97 to 74.

(iii) state the largest decrease in the infant mortality rate.

The largest decrease in infant mortality is equal to

97 - 74 = 23