Question

find the class boundaries.
class limits class boundaries
30 - 34 29.5 - 34.5
35 - 39 34.5 - 39.5
40 - 44 39.5 - 44.5
45 - 49 44.5 - 49.5
50 - 54 49.5 -
55 - 59 -

Explanation:

Step1: Identify pattern for upper boundary

Upper boundary = Upper limit + 0.5

Step2: Calculate 50-54 upper boundary

54 + 0.5 = 54.5

Step3: Calculate 55-59 lower boundary

55 - 0.5 = 54.5

Step4: Calculate 55-59 upper boundary

59 + 0.5 = 59.5

Answer:

54.5, 54.5 - 59.5