Follow these study tips to make your best grade!

1. Get informed. Don’t walk into your test unprepared for what you will face.
2. Think like your teacher.
3. Make your own study aids.
4. Practice for the inevitable.
5. Study every day.
6. Cut out the distractions.
7. Divide big concepts from smaller details.
8. Don’t neglect the “easy” stuff.

These 5 study tips can help you take tests with confidence.

1. Start Studying in School. Studying for tests and quizzes actually starts way before you even know you’ll have a test.
2. Plan Your Study Time.
3. Study Based on the Type of Test You’re Taking.
4. Resist the Urge to Procrastinate.
5. Start a Study Group.

The idea that C is the best answer to choose when guess-answering a question on a multiple choice test rests on the premise that ACT answer choices are not truly randomized. In other words, the implication is that answer choice C is correct more often than any other answer choice.

To find the probability of at least one of something, calculate the probability of none and then subtract that result from 1. That is, P(at least one) = 1 – P(none).

Abstracting from this, the negation or opposite of “at least n” is the condition “(n – 1) or fewer.” One particularly interesting case of this is n = 1: the negation or opposite of “at least one” is “none.”

75%

For example, even the 50/50 coin toss really isn’t 50/50 — it’s closer to 51/49, biased toward whatever side was up when the coin was thrown into the air. The spinning coin tends to fall toward the heavier side more often, leading to a pronounced number of extra “tails” results when it finally comes to rest.

50%

0.66

0.13

14 tosses

38.7%

about 1 in 30 million

The probability of getting 20 heads then 1 tail, and the probability of getting 20 heads then another head are both 1 in 2,097,152. When flipping a fair coin 21 times, the outcome is equally likely to be 21 heads as 20 heads and then 1 tail.

a 1/1024 chance

0.05%