Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Step vs Stride

I purchased an Accusplit AE120XL step pedometer in July of this year. I am having trouble comparing the readings on the pedometer to my milage pedometer. This morning I tested it again against the milage pedometer and after walking one mile the step pedometer read 995 steps. I would like some help in determing the correct definition of a step vs a stride. A source at Google says that a step is the distance one travels by lifting one leg and steping forward. To determine a stride you double the step. I walk daily an average of 2.5 miles a day and leave the step pedometer on until I retire at night and I don't get close to 10000 steps daily. I wear it on my belt on my hip which seems to always move the pendulum as opposed to wearing it on my belt over my knee which sometimes results in faulty readings. The product is nice and easy to operate and I am pleased with the quality but can't seem to correlate the steps/strides to a very accurate Accusplit milage pedometer. Can any one help?