Intermediate Statistician (China) case studies
Intermediate Statistician (China) · Put your knowledge to work in context.
This independent study page provides practice for Intermediate Statistician (China). Its editorial learning areas include Integrated quantitative, financial and evidence reasoning. The questions develop subject knowledge and application through worked reasoning, distinctions between competing answers, and practical scenarios. Study the relevant guide before attempting a mixed set, then explain the evidence or calculation that supports each answer. Topics on this exam: Integrated quantitative, financial and evidence reasoning. The Intermediate Statistician (China) case studies are 4 cases and about 890 words.
1Two groups and one denominator
In a fictional training exercise, Group A contains 20 participants with a mean score of 60 on a classroom practice activity. Group B contains 30 participants with a mean score of 80 on the same activity and scale. The teacher has not supplied individual scores, variances, medians or a sampling design. A student averages 60 and 80 and calls 70 the combined mean.
221 words, about 1 min2A baseline and a revised count
A fictional planning note reports 80 visitors on the first day of an exhibition and 100 on the second day. The count is then corrected to 96 for the second day because four entries were duplicate records. A separate survey says that 40 percent of respondents on day one and 50 percent on day two preferred the same display, but it gives no respondent counts and does not identify a sampling method. One student reports a 20 percent rise using the original day-two count, another calls the preference difference a 10 percent increase, and another assumes all visitors completed the survey.
228 words, about 1 min3Which question is determined
A fictional reasoning worksheet states that x is a real number. The target question is whether x is positive. Statement one gives x²=49. Statement two gives x 0.
215 words, about 1 min4Testing a numerical rule
A fictional classroom task supplies the complete pairs 4 to 9 and 6 to 13 and asks for the partner of 10 under the same simple intended rule. Four response values are 18,20,21 and 24. The worksheet asks learners to explain their operation, test it on both complete pairs and distinguish a plausible intended pattern from a universal mathematical uniqueness claim. A second exercise uses the equation 24/y+3=9 with y nonzero.
226 words, about 1 min