🏛️ Probability & Statistics Misconceptions
Common mistakes in probability & statistics
Adding probabilities when you should multiply
"The AND/OR Mixup"
Probability & StatisticsAssuming correlation means causation
"The Causation Confusion"
Probability & StatisticsFinding median without ordering data first
"The Middle Muddle"
Probability & StatisticsGiving probability greater than 1
"The Impossible Probability"
Probability & StatisticsPlotting cumulative frequency at class midpoints
"The Midpoint Mistake"
Probability & StatisticsUsing frequency for the height instead of frequency density H
"The Height Mistake"
Probability & StatisticsAveraging the values column instead of using frequencies
"The Frequency Forgetter"
Probability & StatisticsNot changing fractions for without replacement
"The Replacement Forget"
Probability & StatisticsReading quartiles at wrong cumulative frequency values
"The Quartile Confusion"
Probability & StatisticsReading the height instead of calculating the area H
"The Reading Error"
Probability & StatisticsTreating extrapolation as reliable
"The Extrapolation Overreach"
Probability & StatisticsUsing wrong total for denominator
"The Total Trouble"
Probability & StatisticsCalculating the wrong class width H
"The Width Blunder"
Probability & StatisticsComparing box plots without using values
"The Vague Comparison"
Probability & StatisticsDrawing line of best fit through all points
"The Connect-the-Dots Error"
Probability & StatisticsSubtracting the wrong value for complementary events
"The Complement Confusion"
Probability & StatisticsTree diagram branches not summing to 1
"The Branch Blunder"
Probability & StatisticsUsing class boundaries instead of midpoints
"The Boundary Blunder"
Probability & StatisticsAdding highest and lowest instead of subtracting
"The Range Reversal"
Probability & StatisticsLeaving gaps between histogram bars H
"The Gap Problem"
Probability & StatisticsMixing up percentage and decimal forms
"The Percentage Pickle"
Probability & StatisticsConfusing expected frequency with probability
"The Expected Error"
Probability & StatisticsGiving the position as the answer instead of the value
"The Position Problem"
Probability & StatisticsAssuming outcomes are equally likely when they are not
"The Fair Fallacy"
Probability & Statistics