The stem-and-leaf diagram gives the ages of the 16 workers in a shop on 1st January 2022. Key: $2|5$ stands for 25.
(a(i))[1]
Calculate the range.
(a(ii))[1]
State the mode.
(a(iii))[1]
Calculate the median.
(a(iv))[2]
Calculate the percentage of workers who are older than 40 but younger than 60.
(b)[2]
Write down the range, the mode and the median for 1st January 2023.
(c)[2]
Complete the stem-and-leaf diagram for 1st January 2024.
(d)[2]
Find the value of $x$.
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