Using Table A to find Percent of Data in a Normal Distribution 

I might be late but in any stats class I've taken, our prof gives us the Z score table (Table A). if you're doing hw at home just google z score table. So for first example (z=1.67) the y axis is the z score's ones and tenths place (1.6 in first example) and the x axis is the hundredths place (.07 in first example). when you find the intersection of the two it gives you the percentage that z score falls into (.9525). no idea how people do this without already having the table though

Use the Normal distribution Table to read the value for 1.67

Z table

​@winniez yallah3615 it's the z table

That was my question

SAME

i think most classes are required to give you a table, if not then you can easily look it up online.

I too want to know this, still i m confused if someone explain i really thankful to him/her

exactly the same question

he has a table that isn't shown in the video.

I will answer for future people because not even websites explain it. So on a standard Normal distribution table. You have all your values and exactly at 0.84 the value is 0.7995 which when rounded up is 0.80 which is 80% Soooo in decimal form 80% is 0.80 and the closest thing to that is 0.7995 which is the value that belongs to 0.84 hope this helps!

@@Buushmasta Thank you! This helped me a lot

@@timi3554 glad I could help!

@@Buushmasta thank you

@@Buushmasta thank you!

From the 1.67 you need to use your positive (right) Z table to look up that number on the chart and find the corresponding value. When you find 1.6 on the left (vertical) side of the chart, then move to the right until you reach 0.07 (horizontal) value of the chart. The answer will be 0.9525. You should have gotten a positive and negative Z-table charts to solve these problems. They help you find the percentage using the Z.

@@lyricg19336 How do I know which number from the right to use ?

@@lyricg19336 but why did you use 0.07? Update: never mind I figured it out. Basically the first 2 values of the decimal (e.g. 1.67 -> 1.6 is the value on the left of the z table, the third value: 1.67 -> 0.07 is the top value. Just match them and find it. Another example: 0.48 - first two digits 0.4 are on the left side, and the third digit 0.08 is the top number). The video did not mention any of this stuff and expects you to know which is a bit poor in terms of teaching. You can just search up the z table to find the values.

Lol

You have to use the z score normal distribution table in order to help find your percentage, it should be online and you can save it

I got it. But how can I know what should I get from itM

How did you get there?