Subject: Mathematics
Book: Maths Mastery
While the arithmetic mean is the familiar (sum ÷ count), the geometric mean multiplies data points and takes the nth root, and the harmonic mean deals with reciprocals. For numbers a and b, the geometric mean is √(ab), while the harmonic mean is 2 ÷ (1/a + 1/b). Each mean highlights different aspects of datasets, with the harmonic mean particularly relevant for rates (speed, frequency) and the geometric mean for growth processes (like interest rates). Understanding the trio fosters nuanced data analysis, ensuring you pick the correct mean to represent your dataset or scenario accurately.
The base of a triangle is 10 cm and its height is 6 cm. What is its area?
View QuestionWhat is the sum of all even numbers between 1 and 50?
View QuestionWhat is the greatest common divisor (GCD) of 36 and 48?
View QuestionIf x^2 - 5x + 6 = 0, what are the roots?
View QuestionA triangle has angles 60°, 60°, and 60°. What type of triangle is it?
View QuestionWhat is the 7th term of the arithmetic progression 3, 6, 9, 12,...?
View QuestionThe probability of rolling a sum of 7 with two dice is:
View QuestionIf 2x = 16, what is the value of x?
View QuestionWhat is the remainder when 5^100 is divided by 3?
View QuestionA number is increased by 20% and then decreased by 10%. What is the net change?
View Question