Class: JLDrill::LevelStats

Inherits:
Object
  • Object
show all
Defined in:
lib/jldrill/model/Quiz/LevelStats.rb

Overview

Keeps track of statistics for a particular level were correct.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LevelStats

Returns a new instance of LevelStats.



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# File 'lib/jldrill/model/Quiz/LevelStats.rb', line 7

def initialize
    @num = 0
    @correct = 0
end

Instance Method Details

#accuracy ⇒ Object

Returns the percentage of items scored correctly. Note this returns an integer from 0 to 100. If the percentage included a fraction, the fraction is truncated.



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# File 'lib/jldrill/model/Quiz/LevelStats.rb', line 31

def accuracy
    if @num > 0
        ((@correct.to_f / @num.to_f) * 100).to_i
    else
        nil
    end
end

#correct ⇒ Object

Indicate that a trial was correct



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# File 'lib/jldrill/model/Quiz/LevelStats.rb', line 13

def correct
    @correct += 1
    @num += 1
end

#incorrect ⇒ Object

Indicate that a trial was incorrect



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# File 'lib/jldrill/model/Quiz/LevelStats.rb', line 19

def incorrect
    @num += 1
end

#total ⇒ Object

The total number of trials



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# File 'lib/jldrill/model/Quiz/LevelStats.rb', line 24

def total
    @num
end