If 68% of the data is within 1 standard deviation of the mean (from -1 to +1), what percentage of the LSAT scores is between a z-score of 0 and +1? Between a z-score of -1 and 0? Write these values as decimals
The graph for standard deviation is perfectly symmetrical around the mean.
If 68% of the scores lie between -1 and + 1, half of them, that is 34% will lie between 0 and +1, and the other 34% of them will lie betweeen -1 and 0.
