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Example finding the minimum z-score and numerical threshold to be in a given percentile in a normal distribution.
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this is incorrect. z-score 0.52 is closer to the true z-score than 0.53. you are making your answer unnecessarily inaccurate. return the dislike button
You are such a star😩😩
Hello,
I know this is an old video. But there is a correction that should be made. 0.52 is the ACTUAL z-score, not 0.53. It doesn't matter if it is below 70%, so long as it is closer than the other value (in this case .7019).
Great if you have that table. Useless otherwise
I put the data (0.3, 80, 9, right) into invnorm on my calculator and got 84.7, then used the Z score formula for 0.5222
Thank god for you guys
Yeah. Thumbs down because I learned nothing . What does the .50 have to do with anything? you made no connection as to how to find that portion. Annoyed. Thanks anyway
Deez nuts
Thank you so much
my resting heartbeat is 96 ._. I don't have school nurses tho. help.
Thanks for the explanation. Really helped me understand the concept. But just one observation, wouldn't it be closer to 70% to use 0.52 vs. 0.53 z score? Since 0.0015 is closer to 70% than 0.0019 (looking at the last two digits of the z score and zeroing out the preceding digits)
this guy playing csgo with that crosshiar?
I don't get it, my question is: Assume the random variable X is normally distributed with mean 50 and standard deviation 7. Find the 96 th percentile. I have no z-score grid either. I am so lost.
Life saver thank you so much
I still don't get it and I have test in 2 hours. I'm dead.
Thank you soooo much
I just want to say thank you so much!!!! I was cramming before a statistics test and this video cleared up everything I had a doubt on! Thank you! 🙂
Thank you Khan Academy. This helped out a lot!
I don't understand why 30% is on the right side instead of the left side…. 30 is less than 80 so shouldn't it be on the left side making it a negative?
First time viewers also easily understand the concept……….
Thank you
nice video.