The question above is answered by my book as follows: "The distribution of ages of best actress winners are right-skewed with a median around 30 years. The distribution of ages of best actor winners is also right-skewed, though less so, with a median around 40 years. The difference between the peaks of these distributions suggest that best actress winners are typically younger than best actor winners. "

My questions are:

(a) how did we know the median for best actresses is around 30 and for best actors it's 40?

(b) how was it concluded that the best actress winners are typically younger than best actor winners?

(c) isn't the 30 the mode for best actresses distribution rather than the median value, as the highest peak corresponds to 30?
 

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2.31 Oscar winners. The first Oscar awards for best actor and best actress were given out in 1929. The histograms below show the age distribution for all of the best actor and best actress winners from 1929 to 2018. Summary statistics for these distributions are also provided. Compare the distributions of ages of best actor and actress winners.32 Best actress 50 40 30 20 10 0 50 40 30 20 10 Best actor 20 40 Age (in years) 60 80 Mean SD n Mean SD n Best Actress 36.2 11.9 92 Best Actor. 43.8 8.83 92 2.31 Oscar winners. The first Oscar awards for best actor and best actress were given out in 1929. The histograms below show the age distribution for all of the best actor and best actress winners from 1929 to 2018. Summary statistics for these distributions are also provided. Compare the distributions of ages of best actor and actress winners.32 Best actress 50 40 30 20 10 0 50 40 30 20 10 Best actor 20 40 Age (in years) 60 80 Mean SD n Mean SD n Best Actress 36.2 11.9 92 Best Actor. 43.8 8.83 92