How much is a Million?
How much is a Billion?
How much is a Trillion?
What's the difference between
a million, a billion, a trillion?
A million seconds is 12 days.
A billion seconds is 31 years.
A trillion seconds is 31,688 years.
Category: Mathematics
Mathematics uses many concepts in threes. The first structure mathematically is a triangle. There are acute, right, and obtuse angles. Trigonometry is the study of the relationship of the sides of a triangle. Have your heard of Pascal's Triangle?
Z Scores
The z-score
The number of standard deviations from the mean is called the z-score and can be found by the formula
x – m
z = ——–
s
x is the value
m is “mu”, the mean
s is standard deviation
Quartiles
Quartile is another term referred to in percentile measure. The total of 100% is partitioned in three places, Q1, Q2, and Q3.
- Lower Quartile is the 25th percentile. (0.25)
- Median Quartile is the 50th percentile. (0.50)
- Upper Quartile is the 75th percentile. (0.75)
Example:
