A Typical Doppler Shift in the Center of a Granular

question 22

Multiple Choice

A typical Doppler shift in the center of a granular cell compared to the "rest" wavelength is 8.75 *10^-4 nm. Take the rest wavelength to be the H_α line of 656 nm. What is the corresponding material speed in the center of the cell?

• A) 0.4 m/s
• B) 0.4 km/s
• C) 8.75 m/s
• D) 875 m/s

Understand the concepts of mean, median, standard deviation, and range in data sets.

Calculate the mean and standard deviation from given data.

Apply the Empirical Rule to mound-shaped distributions to determine the percentage of data within one, two, or three standard deviations from the mean.

Use Tchebysheff's Theorem for any shaped distribution to estimate the proportion of observations within a certain number of standard deviations from the mean.

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