Answered

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can you answer this I need it plss​

Can You Answer This I Need It Plss class=

Sagot :

Answer:

Follow the instruction, do the rest

Step-by-step explanation:

Class Mark - an average of two numbers in class: [(17+20)/2] = 18.5
Lower Boundary - lower of two numbers minus 0.5: 17-05 = 16.5
Upper Boundary - higher of two numbers plus 0.5 = 20 + 0.5 = 20.5
CF less than (<) - frequency + all frequency below the class = In class (1 to 4) the cf < is 1 while in class (5 to 8), the cf <  is 3.
CF more than (>) - frequency + all frequency above class = In class (17 to 20) the cf > is 10 while class (13-16) the cf > is 26

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