A survey was carried out in 30 households in which they were asked the number of people who habitually live together at home. The answers obtained have been the following: 4, 4, 1, 3, 5, 3, 2, 4, 1, 6, 2, 3, 4, 5, 5, 6, 2, 3, 3, 2, 2, 1, 8, 3, 5, 3, 4, 7, 2, 3 a) Build the frequency table. b) Calculate the mean, median, and mode of the data grouped punctually and express in a sentence the meaning of each of these measures c) Calculate the mean, median, and mode of the data grouped in intervals with an amplitude of 4
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
A survey was carried out in 30 households in which they were asked the number of people who habitually live together at home. The answers obtained have been the following: 4, 4, 1, 3, 5, 3, 2, 4, 1, 6, 2, 3, 4, 5, 5, 6, 2, 3, 3, 2, 2, 1, 8, 3, 5, 3, 4, 7, 2, 3
a) Build the frequency table.
b) Calculate the mean,
c) Calculate the mean, median, and mode of the data grouped in intervals with an amplitude of 4
d) What percentage of children use more than 12 "and then ..."
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