Respuesta :
Answer:
lower limit = 5
upper limit = 10
class mark = lower limit + upper limit ÷ 2 = 7.5
class size = upper limit - lower limit
= 10-5 = 5
Step-by-step explanation:
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(i) lower limit = 5
(ii) upper limit = 10
(iii) class mark = 15
(iv) class size = 5
(ii) upper limit = 10
(iii) class mark = 15
(iv) class size = 5