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natta225 [31]
3 years ago
14

47 randomly selected students were asked how many siblings were in their family. Let X represent the number of pairs of siblings

in the student's family. The results are as follows:
# of Siblings 0 1 2 3 4 5 6
Frequency 4 11 8 10 6 5 3

Round all your answers to 4 decimal places where possible.

The mean is:


The median is:


The sample standard deviation is:


The first quartile is:


The third quartile is:


What percent of the respondents have at least 4 siblings?
%

94% of all respondents have fewer than how many siblings?
Mathematics
1 answer:
hammer [34]3 years ago
7 0
Mean: 2.238
median: 3
sample standard deviation: 2.531
first quartile: 1
third quartile: 5

what % of respondents have at least 4 siblings?
29.79%

94% of all respondents have fewer than how many siblings?
5
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<u>Addition: </u>

If we have two complex numbers written in their binomial form, the sum of both will be a complex number whose real part is the sum of the real parts and whose imaginary part is the sum of the imaginary parts (similarly as the sum of two binomials).

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Similarly, the addition of two complex numbers is:

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If we have two complex numbers written in their binomial form, the multiplication of both will be the same as the multiplication (product) of two binomials, taking into account that i^{2}=-1.

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