You may like to read the article on Morse code before attempting
this question. Morse's letter analysis was done over 150 years ago,
so might there be a better allocation of symbols today?
How have "Warmsnug" arrived at the prices shown on their windows? Which window has been given an incorrect price?
Find the frequency distribution for ordinary English, and use it to help you crack the code.
We received a number of observations and conjectures.
Octavia from Fowlmere suggested the following
Meghan from AHS suggested that if you change the properties of the star, it is harder to click it quickly. She also added that males are actually no quicker than females. We already have conflicting conjectures, and this is where providing real data in support of your argument is important.
Maria and Katie from St Mary's conducted an experiment, in which they found that the average reaction time for their left hand was 0.2s, while for their right hand it was 0.15s. Rosie, Natalie and Gabby, also from St Mary's provided similar data which supports the argument that we react quicker with our better hand.
Michael from Lancaster Grammar experimented with a moving star. He made the following acute remark: "If you are right handed have the mouse at the right side of the screen, so when a star does come it is easier to get to the star because your right hand can move faster and more easily to the star if it is at the left."
This raises an important issue - that factors other than reaction time (such as strategy) can affect our results. In conducting a fair experiment it is essential to make sure that these other factors are controlled.
In response to our demand for experimental data, a number of students from Chalkstone Middle School sent in their findings. Sithabile and Shannon sent in some data and concluded that we react fastest with our best hand. Kelly, however, claimed that people always do better with
their left hand. Keeley claimed that boys have better reactions than girls while under stress, but otherwise girls are quicker!
The data were well organised and clearly presened, but in many cases we were concerned that there were not enough data to truly back up your claims. A number of you based your conclusions on testing each individual in your sample just once. Aaron and Eshter made an effort to get more accurate results by repeating individual experiments three times.
To learn more about collecting data and making conjectures, we suggest reading Understanding Hypotheses.