Correlations Age Cholesterol Age Pearson Correlation 1 .882 Sig. (2-tailed) .001 N 10 10 Cholesterol Pearson Correlation .882 1 Sig. (2-tailed) .001 N 10 10 ** Corrolation is significant at the 0.01 leveL(2-tailed)
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- Describe about the Homoscedasticity as correlation coefficient assumption.a. Correlation coefficient between hoursspend on using mobile per day and hours spend on readingbooks per day.The linear correlation coefficient r is ( round to three decimals) The test statistic is ( Round to three decimals ) The P-value is ( Round to three decimals )
- How to Interpret a Correlation Coefficient r?using karl pearsonn coeffecient of correlationSarah is conducting a correlation analysis. She creates a correlation matrix with 5 variables, using data from a sample of 37 people. She has decided to conduct her analysis as a one-tailed test with an alpha of .01. What is the critical value for Sarah's correlation?
- what does it mean to have a non-linear correlation? Give an example of one.Serial correlation, also known as autocorrelation, describes the extent to which the result in one period of a time series is related to the result in the next period. A time series with high serial correlation is said to be very predictable from one period to the next. If the serial correlation is low (or near zero), the time series is considered to be much less predictable. For more information about serial correlation, see the book Ibbotson SBBI published by Morningstar.A company that produces and markets video games wants to estimate the predictability of per capita consumer spending on video games in a particular country. For the most recent 7 years, the amount of annual spending per person per year is shown here. Original Time Series Year 1 2 3 4 5 6 7 $ per capita 32.27 34.06 37.83 43.32 44.62 49.67 51.83 (a) To construct a serial correlation, we use data pairs (x, y) where x = original data and y = original data shifted ahead by one time period. Construct the data…is finding a linear correlation coefficient the same as finding the correlation coefficient? if not, an example of linear correlation coefficient would help.
- What is meant by perfect “positive correlation,” “perfect negativecorrelation,” and “zero correlation”?Serial correlation, also known as autocorrelation, describes the extent to which the result in one period of a time series is related to the result in the next period. A time series with high serial correlation is said to be very predictable from one period to the next. If the serial correlation is low (or near zero), the time series is considered to be much less predictable. For more information about serial correlation, see the book Ibbotson SBBI published by Morningstar. An Internet advertising agency is studying the number of "hits" on a certain web site during an advertising campaign. It is hoped that as the campaign progresses, the number of hits on the web site will also increase in a predictable way from one day to the next. For 10 days of the campaign, the number of hits × 105 is shown. Original Time Series Day 1 2 3 4 5 6 7 8 9 10 Hits × 105 1.3 3.5 4.4 7.2 6.8 8.3 9.0 11.3 13.1 14.7 Test ρ > 0 at the 1% level of significance. (Use 2 decimal places.) tPlz calculate covariance and Coefficient of correlation.