Good Afternoon I have completed the requested questions on section 1 a on excel however I am having a bit of trouble analysing this data and awnsering 1 b and it's sub questions. please help me solve these 3 sub questions (i) Comment on the scatterplot: form, strength, direction, outliers. (ii) Demonstrate how to calculate the slope of the regression line manually, using the summary statistics you generated in excel (correlation coefficient, standard deviation of y and standard deviation of x). Show all workings. (iii) Now calculate the intercept, manually. Show all workings. The comment must be done on the work I have already done on excel. Please help,thank you.
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.
Good Afternoon
I have completed the requested questions on section 1 a on excel however I am having a bit of trouble analysing this data and awnsering 1 b and it's sub questions.
please help me solve these 3 sub questions
- (i) Comment on the
scatterplot : form, strength, direction, outliers. - (ii) Demonstrate how to calculate the slope of the regression line manually, using the summary statistics you generated in excel (
correlation coefficient , standard deviation of y and standard deviation of x). Show all workings. - (iii) Now calculate the intercept, manually. Show all workings.
The comment must be done on the work I have already done on excel.
Please help,thank you.
Step by step
Solved in 5 steps