1e4) DashboardI Khen Academy Sample standard deviation Go A teacher weighed the backpacks of 4 students. Here are the weights (in kilograms): 5, 7,9, 11 The mean is =8 kg. Which of these formulas gives the standard deviation? Choose 1 answer: 5+7+9+11 4. (5-8)+(7-8) + (9- 8) + (11 – 8) (5-8)²+(7 8)² + (9- 8) + (11 – 8)² (5-8)+(7-8) + (9 8) + (11 – 8) (5-8)-+(7-8)+ (9-8) + (11 8) " 2 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 teacher weighed the backpacks of 4 students. Here are the weights (in kilograms):
5,7,9,11
which of these formulas gives the standard deviation?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
