An experiment was conducted to compare anxiety levels among children induced between looking at snakes and pictures of snakes. The following data were collected from a sample of 10 children with orphidiophobia (fear of snakes). Use a =1.01. PARTICIPANT | 1 Anxiety | 2 3 25 30 | 4 30 5 25 | 9 |8 | 10 25 20 35 50 55 40 Score (real snakes) Anxiety 15 20 35 35 20 32 48 |50 40 35 score (pictures) Is there a significant difference between the anxiety scores of looking at real snakes or pictures of snakes?|
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.
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