Statistics

Front

What does L stand for in the formula for the median class?

Back

Lower boundary of the median class.

Front

What does f₁ represent in statistics?

Back

Frequency of the modal class.

Front

What is the formula for mean in the step deviation method?

Back

Mean = A + (Σd / N) * h, where A is the assumed mean, d is the deviation, N is the total frequency, and h is the class width.

Front

What is the formula for mode?

Back

Mode = L + [(f₁ - f₀) / (2f₁ - f₀ - f₂)] * h, where L is the lower boundary of the modal class, f₁ is the frequency of the modal class, f₀ is the frequency of the class preceding the modal class, and f₂ is the frequency of the class succeeding the modal class.

Front

How do you find the mode of a data set?

Back

Identify f₁ (frequency of the modal class) and L (lower boundary of the modal class).

Front

What is the definition of frequency in statistics?

Back

Frequency is the number of times a particular value or category occurs in a data set.

Front

What is cumulative frequency?

Back

Cumulative frequency is the sum of the frequencies for all classes up to and including the current class.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average, median is the middle value when data is ordered, and mode is the most frequently occurring value.

Front

What is a class interval in statistics?

Back

A class interval is a range of values within which data points are grouped.

Front

What is the purpose of using the step deviation method?

Back

The step deviation method simplifies the calculation of the mean by using deviations from an assumed mean.