A data set is given to you and it has missing values which spread along 1 standard deviation from the mean. How much of the data would remain untouched?

 - If missing values in a dataset are within 1 standard deviation from the mean, it suggests that they are relatively close to the central tendency of the data. The proportion of data remaining untouched would depend on the distribution of the data and the specific feature with missing values. You would need to calculate the z-scores for the missing values and determine the proportion within the specified range.