View Full Version : Statistics


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  1. Central Limit Theroy
  2. Linear Regression??
  3. Matched analysis for ordinal data
  4. Roc
  5. level of measurement
  6. CHi square X2 to rule out differences between groups on demographics
  7. question on 2 tailed Z test
  8. question on research problem
  9. Pre/Post Data
  10. Hypothesis testing with no stated standard deviation
  11. Contributions over the span of four years.
  12. Computing Z scores
  13. Computing Z-Scores #2
  14. stuck need help
  15. Improving an estimate of a mean value
  16. categorical age or year-age?
  17. Isolating an effect for a distribution
  18. Help
  19. Question on decision rule
  20. 95% confidence interval
  21. Confidence Intervals, Sample Size
  22. Normal Distribution question...
  23. Eigenvalues
  24. Statistic problem consiting of Student t-test problem
  25. Nonparametric test choice for skewed data
  26. I Need Help?????
  27. STUCK and dont know what to do HELP
  28. p-value and relation to error
  29. three-way anova help please!
  30. Explaining this example... (minimising variance)
  31. confidence interval plus some
  32. Dealing with nonresponses
  33. Likert scale
  34. Help Me Please!!!!
  35. A biomedical experiment problem
  36. Stats Project, Can Anyone Help
  37. Z-Score Help
  38. Percentile Help
  39. Project Help
  40. Probability
  41. 2 way cross classification ANOVA
  42. Probability
  43. Not sure what mathmatical route to take
  44. Normal or not?
  45. Loglinear analysis abnormality
  46. Correlation Home Work Review
  47. unequal and unknown variances
  48. which test?
  49. Which categorical statistic? Help please
  50. Need help on deciding the analysis tests
  51. Regression equation
  52. question about t-test
  53. Confidence interval
  54. Homework review Comparson
  55. r and p in regression
  56. confidence and margin of error
  57. Stats Report
  58. sample size
  59. z score to find ranges
  60. Questions on Correlation Concepts
  61. variables help
  62. confidence interval
  63. margin of error
  64. r values, which section?
  65. confidence interval
  66. Hypothesis testing Help
  67. Another Hypothesis Question
  68. t-test
  69. Satistics skewness
  70. Principal Component Analysis
  71. statistically significant
  72. Basic question regarding methods
  73. Hypothesis Testing
  74. The Normal Approximation to the Binomial Distribution
  75. confusing.
  76. A few questions
  77. comparing and contrasting 95% CIs
  78. stuck on sample size determination
  79. p value
  80. Calculating a binomial probability
  81. width of 90% CI and 95% CI
  82. need to know if I am on the right track
  83. Pre-test questions.
  84. Power analysis
  85. Two-tail test
  86. Is this correct?
  87. estimate/probability
  88. Can propensities and percentages be compared?
  89. Writing out stats
  90. regression on count data?
  91. one sample z test
  92. one sample z test
  93. Inference about the difference between two population proportions
  94. level of measurement.
  95. do not understand evidence of a mean
  96. F test
  97. Tukey results
  98. Help with almonds!!!
  99. Histogram
  100. Cochran-Armitage Trend Test
  101. Likert scales and statistics
  102. helpz!
  103. Hypothesis Testing
  104. Inference about a Population Mean
  105. Simple Regression
  106. Significance level in r (correlation coefficient)
  107. confused again...
  108. hypothesis testing question
  109. Help With Normal Distribution
  110. Help with easy stats
  111. Q about % contribution
  112. datasets finding
  113. P-value method
  114. Normal Distributions
  115. Need help with regression statistics analysis
  116. Can't seem to figure this out... any help?
  117. Can you check my homework it is due 4/5/06 at 10 a.m. Eastern
  118. Please check homework problem #2
  119. Using a TI-84
  120. Example Questions for a Final
  121. Hypothesis testing for populations?
  122. Newbie Here! Question on find number of test...
  123. Need Help Urgently
  124. Post Hoc tests - significant interaction
  125. Meaning of p
  126. normal distribution questions--am I on the right path
  127. Hypergeometric distribution question
  128. simple correlation question
  129. EM algorithm
  130. Can percent be a "continuous" variable?
  131. Are weighted means appropriate?
  132. survey and "other" responses
  133. Mean and Standard Deviation-due tomorrow
  134. please help
  135. Likert analysis & survey - help!
  136. non parametric stepwise regression
  137. Construct validity check problems
  138. confounded by confounders
  139. level of significance test with no standard deviation
  140. Sample size and Power
  141. Any suggestions??
  142. Need help with hypothesis testing problems
  143. How to convert a table of probabilities to j.p.d.f
  144. least regression
  145. What test to use?
  146. chi square with 0 votes in cells
  147. Control Variate for normal r.v.
  148. Help
  149. predicted value
  150. Unspoken ANOVA assumption
  151. Confirmatory factor analysis
  152. null and alternate hypotheses
  153. least-squares prediction
  154. Stats help
  155. Grouping by the dependent variable
  156. How do I do this>?
  157. Statistical analysis for likert type scale
  158. Fischer Table?
  159. Urgent!
  160. Confidence Interval Help
  161. Determining margin of error
  162. FACTOR ANALYSIS - POOLING data from different samples
  163. looking for someone to Critique HW
  164. Normality and ANOVA test
  165. Help needed for Analysis on this complex project
  166. Help with simple Confidence Interval Q
  167. MLR: R2 and RMSE in assessing quality
  168. standard normal distribution help
  169. Does it make sense to calculate a standard deviation from only three values?
  170. r squared and t stats
  171. Evaluating RMSE for MLR models
  172. What exactly is the p-value and the significance level?
  173. Confidence Int for shifted exp dist
  174. mean, mode, mediam
  175. how large the sample size should be?
  176. Nominal/Ordinal scale variables and analysis
  177. 2SLS - endogeneity issue
  178. Analysis of correctness of answers
  179. Help with choosing the right method
  180. Z-scores or mean +/- 2 std rule
  181. Zscores and grouped data.
  182. How to determine whether it is a good sample group and others
  183. Unsure of which test to use!
  184. Distribution NOT normal :-(
  185. Frequency Distribution & Polygons
  186. Help - questions re: Empirical Rule/Chebyshev
  187. ANOVA help!
  188. Psych Stats - Help with Review Q'z
  189. When to use Z scores or t scores?
  190. R value Anova
  191. alpha? p-value?
  192. Kurtosis
  193. Two Sample T-Test With Unequal Variables
  194. Type 1 error
  195. correlation between dependent variable
  196. appropiate post hoc test
  197. T-test and Z-test won't work
  198. Trouble with Hypothesis testing (Psych. Stats)
  199. Pooling data for multiple regression
  200. Fisher's Exact Test
  201. Trying to fit normal dist. to quartile data
  202. What test do I use?
  203. median test or 2 sample kolmogorov test ?
  204. Determing Z score from level of confidence
  205. Multivariate analysis for categorical dependent
  206. Hypothesis Test Writing
  207. t tests (psych stats)
  208. Homegeneity Tests
  209. correlation question
  210. continuous random variables
  211. stats terminology
  212. interpreting Kendall's W
  213. Report Statistics
  214. How to compare multiple groups with multiple covariates?
  215. f test!
  216. determining mean without Z score
  217. binomial/hypothesis tests
  218. Correlation between groups
  219. probability distribution Q
  220. Multiple regression least square estimation
  221. comparing likert data scores
  222. Kind of embarrasing
  223. Can somebody check this one two
  224. hypothesis tests
  225. poisson distribution
  226. population proportions...
  227. textbook question
  228. z or t Argggggggg
  229. errors??
  230. Checking solutions
  231. Analysis of three difference samples
  232. Question about multivariate regression results
  233. Hypothesis Testing Problem
  234. transformations of explanatory variable
  235. Confused on Exponential PDF
  236. Confused on Exponential PDF
  237. Large Sample Tests
  238. hmwk problem - need help
  239. Confidence Intervals
  240. Data Transformations
  241. 2 Problems - HELP!!!
  242. Z Vlaue Formula
  243. Coefficients Intervals
  244. division problem
  245. confidence interval
  246. How do I estimate sales given a multiple regression?
  247. Need help with manova
  248. Non-parametric analysis question - please help!
  249. Basic stats!!!
  250. factor analysis of single item variables possible?