Normal distribution word problems Index
Normal distribution word problems come in six basic types. How do you know that a word problem involves normal distribution? Look for the key phrase “assume the variable is normally distributed” or ”assume the variable is approximately normal.”
Identify which normal distribution problem you have in the table below, and follow the link.
| Post | Given | Asked to find… |
|---|---|---|
| “less than” problems (click here) |
|
The size or probability of “less than” or “fewer than” or “under” a certain amount (i.e. “under $5,000″) |
| “more than” problems (click here) |
|
The size or probability of “more than” or “greater than” or “over” a certain amount (i.e. “under $5,000″) |
| “in between” problems (click here) |
|
The size or probability of “in between” (i.e. “in between $5,000 and $10,000″) |
| “Middle percentage” (click here) |
|
Find the upper and lower limits for a certain given middle percentage |
| “upper percentage” (click here) |
|
find the lower cut off point, given an upper percentage |
| “lower percentage”(click here) |
|
find the upper cut off point, given a lower percentage |
Related posts:
- Normal Distribution Word Problems: “Between”
- Normal Distribution Word Problems: “less than”
- Normal Distribution Word Problems: “Above”
- Normal distribution Word Problems: finding an upper cut off point
- Normal Distribution Word Problems: Finding upper and lower cut off points
How to Do Everything Statistics » Normal Distribution Word Problems: “Between” said:
Sep 04, 09 at 9:32 am[...] This how-to covers solving normal distribution problems that contain the phrase “between” and includes an upper and lower limit (i.e. “find the number of houses priced between $50K and 200K”. Note that this is different from finding the “middle percentage” of something; in that case you will want to follow this: How To Find a Middle Percentage on a Normal Distribution Word Problem. For other problems, see the Normal Distribution problem Index. [...]
How to Do Everything Statistics » Normal Distribution Word Problems: Finding Middle Percentages said:
Sep 04, 09 at 9:35 am[...] between $10K and $50K”. For a full list of normal distribution word problem types, see the Normal Distribution Word Problem Index. Step 1: Identify the parts of the word problem. The word problem will [...]
How to Do Everything Statistics » Normal distribution word problems: finding upper percentages said:
Sep 04, 09 at 10:20 am[...] 40% of test takers”). For a full list of normal distribution word problem types, see the Normal Distribution Word Problem Index. Step 1: Identify the parts of the word problem. The word problem will [...]
How to Do Everything Statistics » Normal distribution Word Problems: finding an upper cut off point said:
Sep 04, 09 at 10:33 am[...] was the passing score?”). For a full list of normal distribution word problem types, see the Normal Distribution Word Problem Index. Step 1: Identify the parts of the word problem. The word problem will [...]
Lida Cako said:
Sep 05, 09 at 8:23 amWhat is the difference between class limit and class boundaries in frequency tables? Class limit is explained in text, but there’s no mentioning of class boundaries (unless I missed it)
Thank you,
Lida
Stephanie said:
Sep 05, 09 at 11:55 amThey are the same thing…just different choice of words,
Stephanie
Lida Cako said:
Sep 06, 09 at 7:46 pmI see… thank you!
Lida
Rebecca Gamble said:
Sep 22, 09 at 11:25 pmI used to find word problems to be hard, is can be hard to find out what the problem is asking you to do. You find yourself spending more time studying the question and if you’re like me over analysis and use the wrong formula or worst just guess. I know I’m going to use this technique on our next exam.
Mark McCrea said:
Oct 01, 09 at 3:19 pmI know. I am doing the samething trying see what formula I am needing to use in the case.
Lisa Barcomb said:
Oct 04, 09 at 8:15 pmWord problems to me are just hard. I don’t know why I can’t get them but I wish the light would come on in my head so I would not have such a hard time doing them. Because I really like this class it just seems like its getting the best of me.
Jennifer Thomas said:
Oct 25, 09 at 9:13 pmI just came across this index. This would have been helfpul to me. I too had trouble trying to understand the word problem and determining which method I should use.
angie widdows said:
Nov 11, 09 at 6:04 pmEven with this example, I am still very confused on this one. More than, Less than, I think I need to look at the example again.
Angella Clarke said:
Nov 20, 09 at 1:58 pmI think that the hardest part about word problems for me is trying to figure out what the question is really asking.
Vanessa DuBarry said:
Dec 10, 09 at 8:51 pmi agree. i never know exactly what they want me to do or what formula to use. even though this blog is helpful but it is still a little overwhelming.
Sunita Sharma said:
Nov 16, 10 at 1:31 amIam so happy by getting to learn fron internet. thank you
show more problem and solution so that we can learn more……
Statistics How To» Blog Archive » Normal Distribution Word Problems: “Above” said:
Jan 03, 12 at 2:21 pm[...] This how-to covers solving normal distribution problems that contain the phrase “more than” (or a similar phrase such as “above”). For other problems, see the Normal Distribution problem Index. [...]
Statistics How To» Blog Archive » Normal Distribution Word Problems: “less than” said:
Jan 03, 12 at 2:24 pm[...] This how-to covers solving normal distribution problems that contain the phrase “less than” (or a similar phrase such as “fewer than”). For other problems, see the Normal Distribution problem Index. [...]