A student's marks in 5 subjects are 75, 68, 80, 92, 56. Find the average of his marks.
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- Two correlated variables may have no true relationship. True or false The correlation coefficient (r) tells us what percent of the variation in the dependent variable is explained by variation in the independent variable. True or False Regression analysis can be linear or nonlinear. True or FalseTrue or falseCourse: Statistics - Lineal Regression A company dedicated to sale of services wants to carry out a study on impact of use of web during working hours. Age (years) Worker's services Labor (years) Web time connected (weekly) Monthly salary (Thousands of $) 22 1 22 254.1 43 8 13 749.2 45 9 11 713.8 47 10 14 874.5 53 11 8 709.6 50 11 10 933.9 56 13 9 1,050.3 59 12 6 874.9 47 10 8 797.4 53 13 12 1,021.7 47 10 11 782.5 55 15 6 1,091.2 48 10 9 1,054.0 49 10 11 748.4 48 12 12 847.0 50 11 9 978.2 39 7 13 601.9 47 9 11 860.1 48 10 12 769.8 49 10 10 740.3 44 8 12 683.8 49 11 10 786.6 48 11 10 858.0 47 8 12 559.5 48 9 10 908.5 58 11 6 797.0 43 8 13 719.4 a) Make a scatter plot and indicate relationship between variable…
- 4UrgentStatement I. The F- value is insignificant. Statement II. The F-value is significant. Statement III. Post hoc test is NOT needed. Statement IV. Post hoc test is needed. * Treatments Participant No Phone Hand-Held Hands-Free 1 4 1 2 3 1 2 3 3 2 4 3 1 "Hhpothetica data from an eperient examining drving performance under thre telephone conditons Statements I, II are TRUE Statement I, II, Il is FALSE Statements II, IV are TRUE None of the above
- Ive never heard of this before23:01 Done A S Male (X2) = binary variable (1 if male, 0 if female) Age (X3) = age in years North (X4) = binary variable (1 if Region = North, 0 otherwise) South (X5) = binary variable (1 if Region = South, 0 otherwise) East (X6) = binary variable (1 if Region = East, 0 otherwise) Using the regression results in column (1): The calculated test statistic is_ The table below contains three estimated regressions, which were computed in 2007 using data on employees. The data set used for the regressions consisted of information on over 10,000 full-time, full-year workers. Employees were surveyed on their earnings and whether they had graduated high school or not. The data set also contains information on the region of the country where the person lived (North / East / South / West), and the individual's gender and age. (plz write in 2 decimal places) is the null hypothesis rejected at the 5% level of significance?_ DO For the purposes of this quiz: AHE = average hourly earnings Graduated…The world is currently being adversely affected by the COFLU-20 pandemic. Persons are required to take certain measures to prevent the spread of this virus; however, persons’ knowledge, attitudes and practices towards COFLU-20 may influence their adherence to these measures. A researcher decided to evaluate the knowledge, attitudes and practices towards COFLU-20 of adults living in the English-speaking Caribbean. To gather the data, the researcher developed an online survey consisting of four (4) sections. Section A gathered demographic data on the respondents including their gender, marital status, highest level of education attained, occupation and country of residence. Section B consisted of 15 questions that gathered data on the respondents’ knowledge of COFLU-20. Section C consisted of 10 questions that gathered data on the respondents’ attitudes towards COFLU-20. The final section, Section D, consisted of 5 questionsthat gathered information on the respondents’ practices against…
- True or False: Correlation implies causation O False O Truedivide a data set into four equal parts, whereas divide it into one hundred equal parts. Quartiles percentiles Percentiles quartiles Measures of variation measures of central tendency Fences Z-ScoresInferential statistics allow us to arrive at conclusions about the on the basis of data. O population; sample O sample; population O independent variable; dependent variable dependent variable; independent variable
