Z Score Table - Z Table and Z score calculation
www.z-table.comThe number is 0.7486. Multiply this number by 100 to get percentages. So 0.7486 x 100 = 74.86%. This means that almost 75% of the students scored lower than George and only 25% scored higher. 75% out of 200 students is 150. George did better than 150 students. Video on How to Use These Z Tables
Z TABLE - Z TABLE
https://www.ztable.netUsing the above data we need to first standardize his score and use the respective z-table before we determine how well he performed compared to his batch mates. To find out the Z score we use the formula Z Score = (Observed Value – Mean of the Sample)/standard deviation Z score = ( x – µ ) / σ Z score = (800-700) / 180 Z score = 0.56