Question

Each employee in a company is either right-handed or left-handed.

32 of the 54 employees are female.
18 of the 41 right-handed employees are male.
Complete the frequency tree for this information.
right-handed
female
left-handed
54
000
right-handed
male
left-handed
Total marks: 3

Answer 1

32 female - 23 right-handed || 9 left-handed

22 male - 18 right handed || 4 left handed

Explanation:

I find it easiest to write all the information out and fill the gaps.

From what we're given, 32 employees are female, that means 22 are male, as 54 - 32 = 22.

We are also given that there are 41 right-handed employees, which means there is 13 left-handed employees by subtraction.

If 18 of the right-handed employees are male, then 23 of them are female, and 4 are left-handed males.

If 23 of the female employees are right-handed, then 9 female employees are left-handed.

It's quite simple if you write everything out :D