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X 8 10 12 16 18 20 24 F 2 1 4 3 3 1...

Economics
JAMB 2018
X 8 10 12 16 18 20 24
F 2 1 4 3 3 1 6

 

From the table, Calculate the mean?

  • A. 24.0
  • B. 17.0
  • C. 18
  • D. 27.2
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Correct Answer: Option B
Explanation

Mean= ∑fx/∑f

  =(16+10+48+48+54+20+144)/(2+1+4+3+3+1+6)

  =340/20

  =17.0

 

By calculation, the mean of the distribution is not 18

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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts