The Purplemath Forums
Helping students gain understanding and self-confidence in algebra.
Statistics
54 topics • Page 2 of 3 • 1, 2, 3
-
- Topics
- Replies
- Views
- Last post
-
- mean 12.2, standard dev 2.5: what prop. of pop. is under 10?
by rushange on Tue Jun 01, 2010 5:22 am - 1 Replies
- 1807 Views
- Last post by stapel_eliz
on Tue Jun 01, 2010 12:04 pm
- mean 12.2, standard dev 2.5: what prop. of pop. is under 10?
-
- mean 80, standard dev 14: 80% of values above what value?
by rushange on Tue Jun 01, 2010 5:19 am - 1 Replies
- 2030 Views
- Last post by stapel_eliz
on Tue Jun 01, 2010 12:02 pm
- mean 80, standard dev 14: 80% of values above what value?
-
- STATISTICS 561-MBA PROGRAM
by ladipknows on Mon May 17, 2010 11:36 pm - 1 Replies
- 1329 Views
- Last post by maggiemagnet
on Tue May 18, 2010 10:32 am
- STATISTICS 561-MBA PROGRAM
-
- Frequency distribution chart
by ironape on Wed Jan 27, 2010 6:03 pm - 1 Replies
- 1447 Views
- Last post by stapel_eliz
on Wed Jan 27, 2010 10:02 pm
- Frequency distribution chart
-
- null hyppthesis
by yabo2k on Mon Oct 26, 2009 9:50 pm - 1 Replies
- 2080 Views
- Last post by ilearnmath.net
on Fri Nov 27, 2009 1:25 am
- null hyppthesis
-
- probability problem involving time....
by marty.frmn on Sat Oct 24, 2009 8:17 pm - 1 Replies
- 825 Views
- Last post by stapel_eliz
on Sat Oct 24, 2009 10:15 pm
- probability problem involving time....
-
- probability problem....
by marty.frmn on Sat Oct 10, 2009 6:20 pm - 2 Replies
- 1286 Views
- Last post by jabuec4367
on Sat Oct 24, 2009 2:32 am
- probability problem....
-
- Chebyshev's Theorem
by taytay822 on Thu Oct 01, 2009 12:41 am - 3 Replies
- 1835 Views
- Last post by stapel_eliz
on Tue Oct 06, 2009 12:38 pm
- Chebyshev's Theorem
-
- sample mean, population mean, pop. st. dev. 5000, sample of
by yabo2k on Sun Oct 04, 2009 7:33 pm - 1 Replies
- 1022 Views
- Last post by stapel_eliz
on Sun Oct 04, 2009 7:47 pm
- sample mean, population mean, pop. st. dev. 5000, sample of
-
- How to solve mean, median, mode problem
by mrcard on Fri Oct 02, 2009 5:10 pm - 1 Replies
- 1442 Views
- Last post by stapel_eliz
on Fri Oct 02, 2009 6:28 pm
- How to solve mean, median, mode problem
-
- standard deviation: Is 2.08166 a normal distribution?
by isabelrachel on Mon Aug 24, 2009 3:45 pm - 1 Replies
- 2135 Views
- Last post by stapel_eliz
on Mon Aug 24, 2009 4:14 pm
- standard deviation: Is 2.08166 a normal distribution?
-
- Find a population data set that contains 6 entries has a mea
by nicknation on Mon Aug 03, 2009 12:20 am - 7 Replies
- 2628 Views
- Last post by stapel_eliz
on Sat Aug 15, 2009 5:39 pm
- Find a population data set that contains 6 entries has a mea
-
- A study was conducted related to purchases of a new product
by FWT on Fri Jul 24, 2009 8:01 pm - 2 Replies
- 1212 Views
- Last post by FWT
on Tue Jul 28, 2009 5:49 pm
- A study was conducted related to purchases of a new product
-
- 95% conf. int. for prop. of pop. w/ wife taller than hubby
by maggiemagnet on Wed Jun 24, 2009 4:21 pm - 1 Replies
- 1665 Views
- Last post by stapel_eliz
on Wed Jun 24, 2009 6:46 pm
- 95% conf. int. for prop. of pop. w/ wife taller than hubby
-
- [SPLIT] test score was in top 20%: z-score is at least...?
by ivonagui on Mon Jun 15, 2009 6:39 pm - 1 Replies
- 1391 Views
- Last post by stapel_eliz
on Mon Jun 15, 2009 7:03 pm
- [SPLIT] test score was in top 20%: z-score is at least...?
-
- Probability- norm. distributed-mean 138, standard dev. 9.7
by ShortStuff on Wed May 27, 2009 4:10 pm - 1 Replies
- 2178 Views
- Last post by stapel_eliz
on Wed May 27, 2009 7:07 pm
- Probability- norm. distributed-mean 138, standard dev. 9.7
-
- Measure of Dispersion
by TUrtez on Tue May 19, 2009 5:10 am - 2 Replies
- 1620 Views
- Last post by TUrtez
on Tue May 19, 2009 4:11 pm
- Measure of Dispersion
-
- statistics: relative frequency from contingency table
by k281127 on Tue May 19, 2009 12:04 am - 1 Replies
- 1984 Views
- Last post by FWT
on Tue May 19, 2009 2:13 am
- statistics: relative frequency from contingency table
-
- A recent study indicated that 20% of adults exercise... Find
by FWT on Sat May 16, 2009 10:55 pm - 2 Replies
- 1401 Views
- Last post by FWT
on Mon May 18, 2009 5:18 pm
- A recent study indicated that 20% of adults exercise... Find
-
- Chebyshev's Theorem: percent between 120 & 150 for mu = 135
by maggiemagnet on Fri Apr 24, 2009 1:07 pm - 2 Replies
- 5256 Views
- Last post by maggiemagnet
on Sun Apr 26, 2009 8:19 pm
- Chebyshev's Theorem: percent between 120 & 150 for mu = 135
-
- box plots: how can you tell if plot is skewed left, right?
by oif.3 on Tue Apr 14, 2009 11:04 pm - 1 Replies
- 1236 Views
- Last post by stapel_eliz
on Tue Apr 14, 2009 11:10 pm
- box plots: how can you tell if plot is skewed left, right?
-
- what range represents the middle 95% of the distribution?
by FWT on Sun Apr 05, 2009 5:03 pm - 4 Replies
- 2501 Views
- Last post by FWT
on Fri Apr 10, 2009 6:27 pm
- what range represents the middle 95% of the distribution?
-
- mean score 500, standard dev. 75, score in 75th percentile
by FWT on Wed Mar 18, 2009 2:48 pm - 2 Replies
- 1897 Views
- Last post by FWT
on Sat Mar 28, 2009 9:39 pm
- mean score 500, standard dev. 75, score in 75th percentile
-
- how to do probability with a dart board thats R=9in, r=5in
by FWT on Sat Mar 07, 2009 6:45 pm - 2 Replies
- 3192 Views
- Last post by FWT
on Wed Mar 11, 2009 12:07 pm
- how to do probability with a dart board thats R=9in, r=5in
-
- mean score for class is 100 with standard deviation of 15
by maggiemagnet on Sat Feb 28, 2009 10:54 pm - 2 Replies
- 1816 Views
- Last post by maggiemagnet
on Sun Mar 01, 2009 7:08 pm
- mean score for class is 100 with standard deviation of 15
54 topics • Page 2 of 3
• 1, 2, 3
Forum permissions
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum