Question

fill in the blank.
a data value is considered ____ if its z - score is less than - 2 or greater than 2.
a data value is considered if its z - score is less than - 2 or greater than 2.

Explanation:

In statistics, the z - score measures how many standard deviations a data point is from the mean. A common rule of thumb is that data values with a z - score less than - 2 or greater than 2 are considered unusual. This is because in a normal distribution (a common distribution in statistics), about 95% of the data lies within z - scores of - 2 and 2. So, values outside this range (less than - 2 or greater than 2) are relatively rare and thus labeled as unusual.

Answer:

unusual