HerdingDogRescuer
New member
- Joined
- Dec 31, 2015
- Messages
- 1
For the standard normal distribution, what z-score corresponds with the second quartile?
My practice quiz says 0.00 and I don't know why.
They had a similar question as well:
For the standard normal distribution, what z-score corresponds with the first quartile?
The answer for this was -0.67, found by locating the value closest to 0.25 on the table which is 0.2486, then finding the z value for this. which is 0.67. As this is below the mean of 0 I assume that's why it's negative.
Now for the second quartile question I thought it would be the same thing. Find the closest value to 0.5 which is 0.4990 which is a z of 3.9, but they say 0.0. So I am lost.
Can anyone help please?
My practice quiz says 0.00 and I don't know why.
They had a similar question as well:
For the standard normal distribution, what z-score corresponds with the first quartile?
The answer for this was -0.67, found by locating the value closest to 0.25 on the table which is 0.2486, then finding the z value for this. which is 0.67. As this is below the mean of 0 I assume that's why it's negative.
Now for the second quartile question I thought it would be the same thing. Find the closest value to 0.5 which is 0.4990 which is a z of 3.9, but they say 0.0. So I am lost.
Can anyone help please?