We all remember the endless ‘cells’ questions at the end of the 2014 Chemistry exam. Less memorable was that the 2013 examination awarded a similar number of marks for ‘cells’ knowledge. Exams that test knowledge of these last two chapters in the course (Galvanic Cells and Electrolytic Cells) separate goodstudents from great students because these topics are taught at the end of the course when students are getting tired and teachers are rushing to finish the course before trial examinations and the Term 3 holidays. Only the most diligent students go out of their way to get a complete understanding of these topics at this stage in the year – and they’re the ones who benefit from this type of exam.
Interestingly, in 2013 and 2014, 33% of the marks in the VCE Chemistry examination were awarded for knowledge of just four of the textbook’s 28 chapters. Therefore, if you’re short of time, focus your efforts on these four chapters (28, 27, 16 and 12) before working on the rest.
“Based on past examinations, students should focus their revision on Electrolysis (28), Galvanic Cells (27), Equilibrium (16) and Biomolecules (12) before working on the rest…”
While the structure of past examinations provide no guarantees about future examinations, it’s still reasonable to expect that the top 5 subjects will remain mostly the same in 2015 as in previous years.
Correlation of the total number of marks awarded per chapter is moderate with R² = 0.48 for 2013 and 2014.
Consider getting a home tutor who can answer your questions and explain difficult concepts to you. Students learn much faster with a tutor than on their own.
I’m excited to say that my wife and I are expecting our first baby in November: we’re expecting her to be born shortly after the VCE Chemistry examination! Like most new parents, I’ve been pondering baby names in the last few weeks. In particular, I’ve been looking for a girl’s name that’s traditional, popular and sounds intelligent.
The first two criteria are easy to satisfy: we can look to the Royal Family for traditional names; and the most popular baby names of 2015 are just one Google search away. However, the third criterion is a bit more difficult: what’s the most intelligent girls’ name? With this question in mind, I set out to find the most intelligent first name in Victoria based on empirical evidence from three publicly available databases.
Method: combine three public databases
I downloaded the list of 40+ VCE study scores for 2014 from the Herald Sun’s website. I cleaned the database using Microsoft Excel and obtained a neat, searchable list of 13,478 students and their VCE results that looked like this:
I removed outliers by deleting all the rare names from the list. Only names with 5 or more high achievers (40+) were included in the final analyses. Admittedly, this removed most Chinese students from the database because they have very unique first names, but I’ll expand on the implications of this later.
I then merged this database with the list of surnames and their prevalences that I obtained from IP Australia, and a similar list of first names from the NSW Government website. Now, I could query my database with interesting questions such as, “Which first name got the highest average ATAR in 2014?” and “Which surnames had the highest proportion of 40+ study scores?” The results were fascinating, and will be of some help when deciding a name for a newborn baby.
Table 1: Students called “Victor” achieved the highest mean ATAR in 2014
The ATARs of students called Victor were far higher than the ATARs of students with any other first name. (Is that because we live in Victoria?) I’ve coloured the names blue, pink or green to represent whether the names are male, female or both.
Table 2: Hilary, Judy and Derek had the highest proportion of 40+ study scores in 2014
I added some more columns to the spreadsheet to estimate what percentage of students born with those 50 first names in 1997 in Victoria achieved a 40+ study score in at least one subject. According to my estimates, every student called Hilary, Judy or Derek achieved at least one study score of 40 or above in their 2014 VCE examinations. Correct me if I’m wrong.
Where are all the Asian names? I mentioned earlier that I removed all the rare names to eliminate outliers from the database. (This is standard practice.) The vast Chinese character set gives rise to literally millions of possible first names, which means that many Chinese students have unique first names and most of them were therefore excluded from my previous analysis. For a truer reflection of the influence of Chinese-background students in VCE, we need to look at students’ surnames instead.
“…every student called Hilary, Judy or Derek achieved at least one study score of 40 or above in their 2014 VCE examinations.”
Table 3: Students with the surname “D’Souza” achieved the highest mean ATAR in 2014
I re-ordered the list of 13,478 students to show the mean ATAR for each surname. Surprisingly, the highest achieving surname was D’Souza, which was originally Portuguese but is now found worldwide. According to Wikipedia, “A prominent family carrying the spelling de Sousa emigrated from Portugal to Goa during mid 1956 before leaving to Hong Kong. This was followed by a third relocation in the mid 1960s, where they now reside in Melbourne, Australia. The family donated their property in Hong Kong to Franciscan nuns.” Their success in Melbourne continues to this day.
Chinese surnames dominated the rest of the top 50. The second-place surname, Chin, for example, comes from Qin Shi Huang, the first ever Emperor of China. He was born in 269 BC and is still regarded as one of the boldest emperors in Chinese history. It’s also believed that the English name for ‘China’ was derived from Emperor Qin Shi Huang’s name.
A few English, Korean, Irish and Vietnamese surnames also made it into the top 50. Kennedy was 273rd out of 379 surnames.
Table 4: Chinese surnames dominate 40+ study scores
An ATAR is an aggregate score of 4 to 6 subjects including English and (usually) Maths, and thus provides an indication of how well-rounded a student is academically. Next, instead of finding lists of well-rounded students, I wanted to find out which students excelled in just one or more subject. I chose study scores of 40 or above as a benchmark. I then divided the number of students with each surname who achieved at least one study score of 40+ by the number of people in Victoria who had that surname. The result is a fairer indication of which students excelled in one or more area, but didn’t necessarily excel in all subjects. The results were fascinating!
Three Sri Lankan surnames and 47 Chinese surnames dominated the top 50. Interestingly, an estimated 23% and 22% of students surnamed Jayasinghe and Ranasinghe achieved a study score of 40+, respectively, which is many times higher than the VCE student population as a whole.