Statistical Tools, Analysis, and Interpretation

Yesterday, I gave a talk at the Polytechnic University of the Philippines Ragay Branch. It was a slightly edited version of a talk I gave last 2010. A copy of the slides I used is here.


Tomica Subaru Impreza WRX STI 4door

I bought this Tomica Subaru Impreza WRX STI 4door around one and a half weeks ago at the Toys “R” Us in Robinsons Place Naga. There were two units for sale.

At 500 pesos, it was not that expensive, considering that a typical Tomica costs around 200 to 300 pesos, with premium models costing around 400 pesos. I noted that a previous price tag had been removed, which I took to mean that it was previously being sold for a higher price.

The model had a plastic base and what I assume is a metal body covered in what I assume is chrome paint. I had absolutely no idea how rare the model was, but I finally decided to buy it because of the plain looking box. My previous experience with Tomica models is that the rarer the item, the simpler the box.

After I bought it, I searched the internet for more information about it. I didn’t find much, but unofficial sources say that this model was never meant to be for sale; it was a give-away during special events. A few of these were being sold. One selling for HK$ 125 (around 800 pesos) had been sold, and I think another one selling for around 900 pesos had also been sold. One priced at US$78.80 (around 4000 pesos) is still available.

I passed by the same store this afternoon and the other unit was still unsold.

20th Philippine Mathematical Olympiad

The Philippine Mathematical Olympiad, a nationwide mathematics competition open to all junior and senior high school students of the Philippines, is carried out in three stages.

The qualifying stage (to be held on October 28, 2017, Saturday) consists of a written exam administered in fifteen (I think) regional testing sites. The exam consists of fifteen multiple-choice questions worth 2 points each, ten multiple-choice questions worth 3 points each, and five answers-only questions worth 6 points each.

The area stage (to be held on November 25, 2017, Saturday) consists of a written exam administered in testing sites for the four areas (Luzon, Visayas, Mindanao, and National Capital Region). The exam consists of twenty answers-only questions and three open-ended questions that require full solutions.

The national stage (to be held on January 20, 2018, Saturday) consists of a written exam and an oral exam administered in Metro Manila. The written exam consists of four open-ended questions that require full solutions to be answered in 4.5 hours. The oral exam (which is open to the public) consists of 30 questions read to the participants and to be answered within a specified time for each item.

Each school may send up to thirty participants (students with a final grade of 88% (or its equivalent) in mathematics in the previous school year). The participants with the top fifty scores in the qualifying stage per area will qualify for the area stage. The participants with the top twenty scores (national ranking) in the area stage will qualify for the national stage. The national finalists will be qualified to join the Mathematical Olympiad Summer Camp (MOSC). The representatives of the country to the International Mathematical Olympiad will be selected from the participants of the MOSC.

I am the regional coordinator for Region V (Bicol Region). Schools in Region V that are interested in participating should complete the official application form and submit it to me on or before 12:00 noon of October 6, 2017 (Friday). My contact information can be found in the official brochure.

70th Anniversary of the First Stamps of the Republic of the Philippines (part 2)

I earlier blogged about these stamps here when I bought a souvenir sheet and two first day covers. Yesterday I was able to buy in the Naga City post office a miniature sheet (with the designs in a se-tenant strip of three) for 108 pesos. (I also bought an additional souvenir sheet for 55 pesos.)