Hello there. To solve this question, we have to check the double bar graph and solve the parts:
Given the double bar graph for the products sold in 2020 and 2021:
a) Estimate the number of radios sold in 2020.
For this, we check the orange bar in radios section.
We find that the value is between 800 and 1000, probably above the midpoint (900), so a close answer would be:
[tex]950\text{ radios}[/tex]b) Which products sold more in 2021 than in 2020?
For this, we check all the produts for which the blue bar is greater than the orange bar. Those are: video-games.
c) Estimate the number of CD's sold in two years
For this, we sum the values for both bars. In this case, we have to estimate the number of CD's sold in 2020 first, since we have an exact value for 2021.
In 2020, the number of CD's sold was between 400 and 600, above the midpoint (500) and closer to 600, so a good guess would be
[tex]575\text{ CD's}[/tex]And 400 copies were sold in 2021, hence the total number is estimated
[tex]575+400=975[/tex]
