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Dr. Mahmoud Omar (Statistics)
United Kingdom
Приєднався 5 жов 2020
Step by step description and explanation of how to analyse data in SPSS, Excel, Jamovi, GraphPad Prism, R statistic, Review Manager, G*power, JMP, Python, UNIX and STATA software.
Assumptions for binary logistic regression
Binary, logistic, regression, method, relationship, outcome, predictor(s), dependent, response, variable, variable, categories, predictors, continuous, interval, ratio, ordinal, assumptions, statistical test, results, violation, findings, unreliable, incorrect conclusions, independence of observations, repeated measurements, linearity of logit for predictors, linearity of log-odds, linear, Box-Tidwell test, scatterplots predictors against logit value, multicollinearity, correlation, variance inflation factor (VIF), outliers, influential points, Cook’s distance, estimates, Error Independence and Homoscedasticity
Переглядів: 24
Відео
Binary logistic regression with binary predictor in SPSS
Переглядів 5419 годин тому
Dependent, sample, P-value, hypothesis testing, alternative hypothesis, null hypothesis, statistics, categorical variable, continuous variable, assumptions, standard deviation, standard error, mean, dependent variable, independent variable, grouping variable, descriptive statistics, significance, one sided tail, two sided tails, 95% confidence interval, upper, lower, average, exposure, explanat...
Assumptions for paired dependent two sample t test
Переглядів 8421 день тому
Paired t-test, dependent, related t-test, mean, paired observations, H0, HA, P-value, assumption, dependent variable, continuous, interval, ratio, categorical related groups, independent variable , categorical groups, related groups, paired, normality, histogram, Q-Q plot, box plot, statistics, Shapiro-Wilk test, Kolmogorov-Smirnov test , Anderson-Darling test, Wilcoxon Signed Rank test, non-pa...
Assumptions for Unpaired two samples t test
Переглядів 153Місяць тому
Assumptions, Unpaired two samples t-test, Independent t-test, Student’s T-test, unpaired two sample test, means, unrelated groups, variables, Independent variable, Dependent variable, Continuous variable, population means, continuous scale, Interval, Ratio, categorical groups, categories, Independence of observations, outliers, Inter Quartile Range (IQR), Z-score, Box-plot, Normal distribution,...
Principal Component Analysis Exploratory Factor Analysis Confirmatory Factor Analysis
Переглядів 3965 місяців тому
nalyze, questionnaire, data, Survey, points, Likert, scale, Continuous scale, Nominal, Instrument, Demographic data, Sex, Occupation, Education, experiences, Family members, Items, Questions, Response, Ordinal, dichotomous, Outcome, Single item, Multiple items, Dependent variable, Independent variable (IV), Exploratory, Predictor, DV, Survey analysis methods, Data Preparation, Data cleaning, Re...
Exploratory Factor Analysis EFA versus Confirmatory Factor Analysis CFA
Переглядів 3015 місяців тому
Analyze, questionnaire, data, Survey, points, Likert, scale, Continuous scale, Nominal, Instrument, Demographic data, Sex, Occupation, Education, experiences, Family members, Items, Questions, Response, Ordinal, dichotomous, Outcome, Single item, Multiple items, Dependent variable, Independent variable (IV), Exploratory, Predictor, DV, Survey analysis methods, Data Preparation, Data cleaning, R...
Meta analysis Hazard Ratio Odds Ratio Risk ratio Standardized Mean Difference in Review Manager
Переглядів 3875 місяців тому
Systematic review, Meta-analysis types, Subgroup meta-analysis, Heterogeneity test, Egger’s regression, Sensitivity analysis, Forest plot, Funnel plot, Effect size, PRISMA, Hedges’ g, Cohen’s d , OR, RR, Rate, Correlation, Fixed effects, Random effects mode, (I2), Overall effect size, Single group meta-analysis, Two group meta-analysis, Multiple group meta-analysis, Proportional meta-analysis, ...
Meta analysis for continuous outcome using Standardized Mean Difference SMD in Review Manager RevMan
Переглядів 6566 місяців тому
Systematic review, Meta-analysis types, Subgroup meta-analysis, Heterogeneity test, Egger’s regression, Sensitivity analysis, Forest plot, Funnel plot, Effect size, PRISMA, Hedges’ g, Cohen’s d , OR, RR, Rate, Correlation, Fixed effects, Random effects mode, (I2), Overall effect size, Single group meta-analysis, Two group meta-analysis, Multiple group meta-analysis, Proportional meta-analysis, ...
Meta analysis for Binary outcome based on Risk Ratio RR in Review Manager RevMan
Переглядів 2066 місяців тому
Subgroup, meta-analysis, binary, outcome, Risk ratio, effect size, estimate, statistical method, summary, pairwise group, results, multiple studies, clinical, research, medial, clinical trials, overall, pooled, intervention, treatment, exposure, control, reference, unexposed, event, probability, data, variability, heterogeneity, inconsistency, categorical, variable, binomial, dichotomous, level...
Meta analysis binary outcome odds ratio in Review Manager RevMan
Переглядів 4166 місяців тому
Subgroup, meta-analysis, binary, outcome, Risk ratio, effect size, estimate, statistical method, summary, pairwise group, results, multiple studies, clinical, research, medial, clinical trials, overall, pooled, intervention, treatment, exposure, control, reference, unexposed, event, probability, data, variability, heterogeneity, inconsistency, categorical, variable, binomial, dichotomous, level...
Assumptions for Factor Analysis FA
Переглядів 2276 місяців тому
Factor analysis, constructs, components, factors, reduction, method, technique, mathematical, items, questions, questionnaire, survey, Likert scale, group, rotation, oblique, orthogonal, varimax, promax, Explore, exploratory, scale, instrument, assessment, loading, measure, descriptive, univariate, correlation matrix, coefficients, determinant, KMO Bartlett’s test, unrotated, scree plot, extrac...
Assumptions for Confirmatory Factor Analysis CFA
Переглядів 3836 місяців тому
Confirmatory Factor analysis, CFA, questionnaire, scale, Likert scale, survey, data, factor analysis, EFA, latent factors, underlying structure, variables, data, complex approach, tests, hypothesis, items, associated, specific factors, relationships, observed variables, underlying latent factors, confirm, disconfirm, factor structure, data fit, hypothesized model, impose, number of factors, val...
Assumptions for Exploratory Factor Analysis EFA
Переглядів 2247 місяців тому
Factor analysis, constructs, components, factors, reduction, method, technique, mathematical, items, questions, questionnaire, survey, Likert scale, group, rotation, oblique, orthogonal, varimax, promax, Explore, exploratory, scale, instrument, assessment, loading, measure, descriptive, univariate, correlation matrix, coefficients, determinant, KMO Bartlett’s test, unrotated, scree plot, extrac...
Principal Component Analysis PCA Assumptions
Переглядів 3697 місяців тому
Analyze, questionnaire, data, Survey, points, Likert, scale, Continuous scale, Nominal, Instrument, Demographic data, Sex, Occupation, Education, experiences, Family members, Items, Questions, Response, Ordinal, dichotomous, Outcome, Single item, Multiple items, Dependent variable, Independent variable (IV), Exploratory, Predictor, DV, Survey analysis methods, Data Preparation, Data cleaning, R...
Statistical methods for Analysis of Survey data Likert scale
Переглядів 6737 місяців тому
Analyze, questionnaire, data, Survey, points, Likert, scale, Continuous scale, Nominal, Instrument, Demographic data, Sex, Occupation, Education, experiences, Family members, Items, Questions, Response, Ordinal, dichotomous, Outcome, Single item, Multiple items, Dependent variable, Independent variable (IV), Exploratory, Predictor, DV, Survey analysis methods, Data Preparation, Data cleaning, R...
Principal Component Analysis Exploratory Factor Analysis Confirmatory Factor Analysis
Переглядів 2627 місяців тому
Principal Component Analysis Exploratory Factor Analysis Confirmatory Factor Analysis
Confirmatory Factor analysis CFA questionnaire data
Переглядів 7988 місяців тому
Confirmatory Factor analysis CFA questionnaire data
Change column size when typing in Excel
Переглядів 2138 місяців тому
Change column size when typing in Excel
Principal Component Analysis PCA Exploratory Factor Analysis EFA
Переглядів 7348 місяців тому
Principal Component Analysis PCA Exploratory Factor Analysis EFA
Selecting Cases Values from variables in SPSS
Переглядів 1,2 тис.8 місяців тому
Selecting Cases Values from variables in SPSS
Selecting Variables from Dataset in SPSS
Переглядів 3249 місяців тому
Selecting Variables from Dataset in SPSS
Meta Analysis using Hazard ratio in Review manager RevMan
Переглядів 1,7 тис.9 місяців тому
Meta Analysis using Hazard ratio in Review manager RevMan
Principal Component Analysis and Factor Analysis
Переглядів 2489 місяців тому
Principal Component Analysis and Factor Analysis
Factor analysis FA versus principle component analysis PCA
Переглядів 3099 місяців тому
Factor analysis FA versus principle component analysis PCA
Principal Components Analysis for questionnaire data
Переглядів 50310 місяців тому
Principal Components Analysis for questionnaire data
Transforming 5 Points Likert scale to Nominal scale in SPSS
Переглядів 83210 місяців тому
Transforming 5 Points Likert scale to Nominal scale in SPSS
Hi, your video is very great, but how do I see the post hoc result of job*salary? the post hoc results only show the job and salary seperately
Thank you so much for this!!! Straight to the point and so helpful!
Please introduce more functions under the Meta package, especially these functions: label.right, label.left, label.e, label.c, these functions are more important than changing the color of the summary effect line, diamond and the effect size square of each study.
When I type Studylab = studyID, it said 'object not found', how can I resolve this?
Excellent and really very explanatory sir...Thank you Sir
The ratio of variance has to be compared to which value
How to find the p values?
this is very helpful, thank you!!
你做得非常好! 您能帮我处理一些不相关的事情吗? 我有一个SafePal钱包,里面有USDT,并且我有恢复短语.『pride』-『pole』-『obtain』-『together』-『second』-『when』-『future』-『mask』-『review』-『nature』-『potato』-『bulb』. 我该如何将它们转移到Binance?
الله يعطيك العافية دكتور جدا مفيد الشرح. انا طالبة ماجستير وعندي سؤال بخصوص الcompetitive elisa. الdata عندي محتاجة trendline ولكن الpolynomial model عم يعطيني الكثير من الinvalid solutions. ممكن استخدم ال exponential model ؟
Clear and direct to the point👍
how to we get P value
its wonderful for me. thank u sir for making such kind of video
is there a way to adjust the text size?
Hi Dr. Omar. Thank you for this video. Simplified and very helpful
Thankyou!
Thanks a lot Dr.! I got what I miss many times
Nicely explained
الله يسعدك ويحفظك يا دكتور ، أنا طالبة ماجستير من الصين وبحثي يحتاج analysis شكرا ساعدتني ❤
Good to.hear that
Thanks for your great organized, informative and stick to the point explanation!
Thank you so much. This has really been helpful.
Can you give me your number to contact
ممتاز وأفضل شرح وجدته على Cox proportional hazards regression analysis .. جزاك الله خير
WHERE DID YOU FIND THE TABLE OF STANDARD DIS
You should have introduced problem examples
Can I ask how do I analyze a standard curve if there are no concentrations and instead only a dilution factor. And do I back calculate samples to it
Thanks dr.
💖💖👌👌👌👌👌👌
Hi Dr. Mahmoud, thank you for the guide. I have a question, at timestamp 6:17 , is it necessary to delete the previous values and labels, and redo it?Is it possible to just edit the previous and click OK to update it? As in will it affect how SPPS registers/processes the reverse coding request?
You are my hero
Thanks. This was very useful. How do we change the scale of X axis. I have a data sets where I want to estimate the survival curve in terms of hours and not days as survival time. Will appreciate if you can guide on this. Instead of “days” as time interval in the X axis, I want to change the scale to “hours” instead of “days”. Thanks a lot
Where do we get ur notes
Thank you very much
THANK DR, but too short... plz make it broader
very clear explanation, thank you so much!
pls how did you calculate the p?
simple and good information sir
thank you for you great contribution to the community
thank you for this
could you send /upload video for egger's regration test with how to do it, and for trim and fill
Thanks ! it is really helpful
Very nice Dr.
Thanksso much for the useful guide
Dr. Really I appreciate you sharing those wonderful introduction part of meta analysis. Thank you so much!!
YESS!!!!!
Thanks 🙏
Awesome vid bro
Thanks
Thank you!
this is so helpful, thank you very much