A poorly-designed graph confuses Business Insider South Africa

It seems like I’m not done criticising poor reporting from South African news sites yet. We had City Press irresponsibly promoting psychics, News24 writing a headline that got almost everything wrong and, now, Business Insider fails to understand numbers and get mislead by a poorly-designed graph. I would’ve thought a business-focussed publication would understand numbers and graphs but, not for the first time, I have been disappointed.

The graph below was produced by Stats SA and reproduced in a Business Insider article about the Rand turning 60. It shows how the price of various goods have increased since 1961. However, the graph is confusing and could easily mislead people. Take a look now and see if you can spot the problem. [Edit (16/02/2021): The BI article has been updated and both the graph and statement have been removed.]

The absolute increase in price of various items. (Source: Stats SA)
Continue reading