10. Z scores and Z test in SPSS explained in Nepali скачать в хорошем качестве

10. Z scores and Z test in SPSS explained in Nepali

I Nepali, I explain how to find Z scores and do one-sample Z test in SPSS. Caution: Know the meaning of statistics before going to SPSS. Syntax to copy into SPSS: **syntax created by how2stats **This syntax performs a one sample z-test in SPSS **Simply enter the four relevant values in the line below underneath the 'begin data' command **The first number is the sample size (35), the second number is the sample mean (105), **the third number is the population mean (100) **and the fourth number is the population standard deviation (15) **Replace the four values below with your own. **The p value that is reported is based on a two-tailed test. **To obtain the one-tailed p value, simply divide the two-tailed p value by 2. **As an extra, this syntax also calcuates Cohen's d as estimate of effect size. data list list / n sample_mean population_mean population_sd. begin data 35 105 100 15 end data. Compute mean_difference = sample_mean - population_mean. Compute square_root_n =SQRT(n). Compute standard_difference = population_sd/square_root_n. Compute z_statistic = mean_difference/standard_difference. Compute chi_square = z_statistic*z_statistic. Compute p_value = SIG.CHISQ(chi_square, 1). Compute cohens_d = mean_difference/population_sd. EXECUTE. Formats z_statistic p_value cohens_d (f8.5). LIST z_statistic p_value cohens_d.