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  2. Student–teacher ratio - Wikipedia

    en.wikipedia.org/wiki/Student–teacher_ratio

    Over time, the average class ratios have changed tremendously. In 1955, the student-teacher ratio was 26.9 to 1. Then in 1985, it was changed to 17.9 to 1. But in 2008 it decreased to 15.3 to 1 teacher. By 2010, 2011, and 2012, it became an average of 16 students to 1 teacher. (teachers and pupil/teacher ratios). [6]

  3. Learning rate - Wikipedia

    en.wikipedia.org/wiki/Learning_rate

    In the adaptive control literature, the learning rate is commonly referred to as gain. [2] In setting a learning rate, there is a trade-off between the rate of convergence and overshooting. While the descent direction is usually determined from the gradient of the loss function, the learning rate determines how big a step is taken in that ...

  4. Average - Wikipedia

    en.wikipedia.org/wiki/Average

    Average of chords. In ordinary language, an average is a single number or value that best represents a set of data. The type of average taken as most typically representative of a list of numbers is the arithmetic mean – the sum of the numbers divided by how many numbers are in the list. For example, the mean average of the numbers 2, 3, 4, 7 ...

  5. Grading in education - Wikipedia

    en.wikipedia.org/wiki/Grading_in_education

    Grading in education is the application of standardized measurements to evaluate different levels of student achievement in a course. Grades can be expressed as letters (usually A to F), as a range (for example, 1 to 6), percentages, or as numbers out of a possible total (often out of 100).

  6. Learning curve - Wikipedia

    en.wikipedia.org/wiki/Learning_curve

    A learning curve is a graphical representation of the relationship between how proficient people are at a task and the amount of experience they have. Proficiency (measured on the vertical axis) usually increases with increased experience (the horizontal axis), that is to say, the more someone, groups, companies or industries perform a task, the better their performance at the task.

  7. Mean - Wikipedia

    en.wikipedia.org/wiki/Mean

    In some circumstances, mathematicians may calculate a mean of an infinite (or even an uncountable) set of values. This can happen when calculating the mean value of a function (). Intuitively, a mean of a function can be thought of as calculating the area under a section of a curve, and then dividing by the length of that section.

  8. Here's the Average Social Security Benefit at Ages 62 ... - AOL

    www.aol.com/heres-average-social-security...

    For every year less of 35 worked, the SSA will average a $0 into your calculation. If you believe you'll need your Social Security check to make ends meet during retirement, you'll want to work at ...

  9. Weighted arithmetic mean - Wikipedia

    en.wikipedia.org/wiki/Weighted_arithmetic_mean

    However, this does not account for the difference in number of students in each class (20 versus 30); hence the value of 85 does not reflect the average student grade (independent of class). The average student grade can be obtained by averaging all the grades, without regard to classes (add all the grades up and divide by the total number of ...