Question

In a normal distribution, a data value located 0.5 standard deviations below the mean has Standard Score: z = -0.5CorrectIn a normal distribution, a data value located 2 standard deviations above the mean has Standard Score: z = 1.5IncorrectIn a normal distribution, the mean has Standard Score: z = 0Correct

Answer 1

Step-by-step explanation

In a normally distributed set of data the value known as the z-score represents the number of standard deviations by which a value of the distribution is above or below the mean value.

If a certain data value is located n standard deviations above the mean then its z-score is equal to n. If it is located n standard deviations below the mean then its z-score is equal to -n. In addition, the mean value has a z-score equal to 0.

Answer

Following what I stated above we can give the three values requested.

For the first box we have -0.5.

For the second we have 2.

For the third we have 0.