# 1. Using the data from Problem 1.2: (a) What is the premium, in terms of average earnings, of a…

1. Using the data from Problem 1.2:

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(a) What is the premium, in terms of average earnings, of a
degree over A levels (NVQ 3)? Does this differ between men and women?

(b) Would you expect median earnings to show a similar
picture? What differences, if any, might you expect?

Problem 1.2

The data below show the average hourly earnings (in £s) of
those in full-time employment, by category of education (NVQ levels. NVQ 4
corresponds to a university degree).

(a) In what fundamental way do the data in this table differ
from those in Problem 1.1?

(b) Construct a bar chart showing male and female earnings
by education category. What does it show?

(c) Why would it be inappropriate to construct a stacked bar
chart of the data? How should one graphically present the combined data for
males and females? What extra information is necessary for you to do this?

Problem 1.1

The following data show the education and employment status
of women aged 20–29:

(a) Draw a bar chart of the numbers in work in each
education category (the first line of the table). Can this be easily compared
with the similar diagram in the text, for both males and females (Figure 1.1)?

(b) Draw a stacked bar chart using all the employment
states, similar to Figure 1.3. Comment upon any similarities and differences
from the diagram in the text.

(c) Convert the table into (column) percentages and produce
a stacked bar chart similar to Figure 1.4. Comment upon any similarities and
differences.

(d) Draw a pie chart showing the distribution of educational
qualifications of those in work and compare it to Figure 1.5 in the text.