The histogram below shows information about the masses of gold in the rings in a jewellery shop. a) Work out an estimate for the number of rings that contain between 1.4 g and 3 g of gold. b) Write a sentence to explain why the value you calculated in part a) is only an estimate. Frequency density 100- 75 50- 25- 2 3 Mass (g) Q Zoom 4. 5.
