(2) Spurious correlation

3. For Type I error, please name the most important reason why it may occur.

4. For R squared, please interpret the figures of \( \mathbb{R}^2 \)

Session 2 (15%)(1) Please interpret the Summer and Winter indexes.

(2) Find seasonal index for Spring.

(3) Based on these indexes, what kind of advice you would give to the restaurant owner in terms of operational management?

(1) Please calculate the correlation coefficient between economics scores and statistics scores.

(2) Now I want to use economics scores to estimate statistical scores. Please make a regression line based on the above data.

2. The patrol police at the Shulin Station on the second highway want to know if the average speed of the truck is too high. Today, 81 trucks were randomly selected to measure their speed, and found that the average speed was 105 kilometers per hour and the standard deviation was 6 kilometers per hour, and it was assumed that the population obeyed the normal distribution. Please answer the following question: Does the average speed of a truck exceed 100 kilometers per hour under a significant level of 0.05? (Please write the null hypothesis and the opposing hypothesis, then calculate the statistic value and P value, respectively, and explain your statistical results). (15 %)

(1) Please explain the significance of the estimated regression coefficients of X3 and X4, respectively.

(2) Please use a significance level of 0.05 to test the significance of the regression coefficients of X3 and X4, respectively.

115年 - 115 國立臺北大學_碩士班一般入學考試試題_國際企業研究所：統計學#147120

115年 - 115 國立臺北大學_碩士班一般入學考試試題_統計學系：統計學#147104

115年 - 115 國立臺北大學_碩士班一般入學考試試題_自然資源與環境管理研究所：統計學#146969

115年 - 110 國立臺北大學_碩士班一般入學考試試題_企業管理學系甲組：統計學#146951

115年 - 115 國立臺北大學_碩士班一般入學考試試題_金融與合作經營學系：統計學#146920

115年 - [無官方正解]115 國立臺北大學_碩士班一般入學考試試題_經濟學系：統計學#146534

115年 - [無官方正解]115 國立嘉義大學_碩士班招生考試試題_財務金融學系：統計學#143862

115年 - 115 中央警察大學_碩士班入學考試試題：統計學#139759

114年 - 114 國立臺北大學_碩士班一般入學考試試題_統計學系：統計學#147125

114年 - 114 國立臺北大學_碩士班一般入學考試試題_企業管理學系甲組：統計學#146907