Задачи Статистика 15-16

Target 15.

Cash costs for construction and installation work in the current period increased by 38%, and the cost of works - by 46.8%. Determine the volume index of construction and assembly works.

Target 16.

In the shop there are five workers of the qualifications and Monthly output. To study the link between skilled workers and their output of the linear equation to determine the connection and the correlation coefficient. To give an interpretation of the regression coefficients and correlation.

Personnel number of the working discharge production output per shift, pieces.

1 6130

2 February 60

3 March 70

4 5110

90 May 4