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The table given below presents the profit (in multiple of thousand rupees) of a firm for the years 2010 – 2018. By how much percentage is the average profit of the years 2015 – 2017 greater than the profit of 2012? Years Profit of a firm 2010 7500 2011 7000 2012 8000 2013 8500 2014 9500 2015 11000 2016 8000 2017 11000 2018 11500
Calculate the dielectric constant of a material which when inserted in parallel condenser of area 10mm × 10mm and distance of separation of 2mm, gives a capacitance of 10-9 F.
Referring to the below figure, determine the required length of the weld joining two steel plates which are 10mm wide and 10mm thick. The permissible shear stress in the weld is 80N/mm².
Consider the statements with respect to the degree of accuracy in estimating. Assertion (A): The accuracy to be observed in preparing an estimate depends on the rate of the item and unit of payment. Reason (R): The higher the rates the greater should be the accuracy with which the quantities are calculated.
Which of the following statements are correct for temperature rise in metal cutting operation? 1) It adversely affects the properties of tool material. 2) It provides better accuracy during machining. 3) It causes dimensional changes in workpiece and affects accuracy of machining. 4) It can distort the accuracy of machine tool itself
Which of the following option is true for given statements about gear measurement? Statement 1: There is no effect of cutter accuracy on the accuracy of gear. Statement 2: Accuracy of individual elements is necessary for precision gears.
Imagine, you are solving a classification problems with highly imbalanced class. The majority class is observed 99% of times in the training data. Your model has 99% accuracy after taking the predictions on test data. Which of the following is true in such a case?
1. Accuracy metric is not a good idea for imbalanced class problems.
2.Accuracy metric is a good idea for imbalanced class problems.
3.Precision and recall metrics are good for imbalanced class problems.
4.Precision and recall metrics aren't good for imbalanced class problems.
Johny Deep, a salesman of a Mercedes Benz showroom offers a commission of x% on the first sale of worth Rs. 3000 and y% on the part of sale exceeding it. He gives Rs. 1100 as commission on a sale of Rs. 7000 and Rs. 1660 as commission on a sale of Rs. 11000. Find the value of x and y.  
The following table shows the percentage of marks obtained by seven students in six different subjects in an examination. Student Maths Chemistry Physics Geography History Computer Science   Maximum Marks = 150 Maximum Marks = 130 Maximum Marks = 120 Maximum Marks = 100 Maximum Marks = 110 Maximum Marks = 90 Ankit 100 80 80 40 70 70 Aman 90 50 90 60 90 80 Ayush 80 65 70 70 80 80 Rohit 90 60 80 95 60 60 Tanvi 80 65 65 80 40 60 Tarun 70 75 85 77 50 90 Muskan 65 35 50 85 80 80   What are the average marks obtained by all the seven students in Physics? (Rounded off to two digits after the decimal)
Which of the following statements are correct (i) Accuracy is the closeness with which an instrument approaches the true value as the quantity being measured. (ii) Precision is a measure of reproducibility of the measurement. (iii) Precision of an instrument can be improved upon by calibration. (iv) Accuracy may be specified in terms of limiting error.