i cant seem to find the mean A sample of 60 students at De Anza College was taken to estimate the average number of sodasconsumed in a single day.Number ofCumulativeRelativeFrequencySodasFrequencyRelativeConsumedFrequency10150.250.251210.350.602120.200.80390.150.95430.051.00The mean is:O 8.4O 12O 21.4

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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i cant seem to find the mean

A sample of 60 students at De Anza College was taken to estimate the average number of sodas
consumed in a single day.
Number of
Cumulative
Relative
Frequency
Sodas
Frequency
Relative
Consumed
Frequency
10
15
0.25
0.25
1
21
0.35
0.60
2
12
0.20
0.80
3
9
0.15
0.95
4
3
0.05
1.00
The mean is:
O 8.4
O 12
O 2
1.4

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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