What is the standard error of the mean?
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
Neurons fire action potentials (“spikes”) at different frequencies under different circumstances. A neuron is recorded in an awake-behaving monkey looking at a luminous dot 40 centimeters away to determine the neuron’s baseline activity. Over the course of 72 trials randomly interspersed with other conditions, that neuron is found to have an average baseline activity of −x=27.8 spikes per second with standard deviation s=32.2 spikes per second. What is the standard error of the
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