Choose a quantity to be represented by a variable, then write a mathematical expression for each. Do not solve. 1. A three-digit number whose hundreds digit is half the tens digit and the tens digit is 2 more than the units digit 2. The total interest earned after one year when Php 100 000 is invested, part of 6% annual interest rate and the remaining part at 7.5% annual interest rate 3. The distance travelled by a man driving at the rate of 60 kph 4. The total distance travelled by a boat 1 hour upstream and 30 minutes downstream in which the rate of current is 3 kph
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Choose a quantity to be represented by a variable, then write a mathematical expression for each. Do not solve.
1. A three-digit number whose hundreds digit is half the tens digit and the tens digit is 2 more than the units digit
2. The total interest earned after one year when Php 100 000 is invested, part of 6% annual interest rate and the remaining part at 7.5% annual interest rate
3. The distance travelled by a man driving at the rate of 60 kph
4. The total distance travelled by a boat 1 hour upstream and 30 minutes downstream in which the rate of current is 3 kph
5. The fraction of work done by a man who can finish a job in 2 hours
6. The percentage of alcohol in a mixture of 3/4 liter of pure water and x liters of 8% alcohol solution
7. The age of a woman 15 years ago
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