Precision and Recall in Machine Learning Quiz 1 Number of questions: 16Time limit: 7 minutesMust be finished in one sitting. You cannot save and finish later.Questions displayed per page: 1Will allow you to go back and change your answers.Will not let you finish with any questions unattempted. 1 / 16 Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of exactly 7.32 g for the mass of the standard. These results imply that the balance that was used is: Accurate but not precise Precise but not accurate Neither accurate nor precise Both accurate and precise 2 / 16 A set of data are all close to each other, but they are not close to the actual value. This set of data can be described as... Accurate None of the above Both precise and accurate Precise 3 / 16 Which of the following lengths is the same as one meter? One centimeter One hundred centimeters Ten centimeters One thousand centimeters 4 / 16 A reaction takes place that is expected to yield 171.9 g of product, but only yields 154.8 g. What is the percent error for this experiment? 17.1% 9.9% 90.1% 111.0% 5 / 16 The closeness of a measurement to its true value is a measure of its: Reproducibility Usefulness Precision Accuracy 6 / 16 This bull eyes demonstrates… High Accuracy & Low Precision Low Accuracy & High Precision Low Accuracy & Low Precision High Accuracy & High Precision 7 / 16 A set of data are all close to each other, and they are close to the actual value. This set of data can be described as... Both precise and accurate None of the above Precise Accurate 8 / 16 Saba estimates the weight of her cat to be 8 pounds. The actual weight of the cat was 10 pounds. Find the percent error. 30% 20% 25% 15% 9 / 16 The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error? 15.79% 2.25% 18.75% 18% 10 / 16 What is the quantity 7.5 millimeters expressed in centimeters? 0.075 cm 0.75 cm 7.5 cm 75 cm 11 / 16 It is a measure of how close measurements come to each other when they are made in the same way Precision Accuracy Error Extrapolation 12 / 16 This bullseye demonstrates... High Accuracy & High Precision Low Accuracy & Low Precision Low Accuracy & High Precision High Accuracy & Low Precision 13 / 16 Describe the accuracy and precision of the image Not accurate and not precise Accurate and not precise Not Accurate and Precise Accurate and Precise 14 / 16 Based on the data provided below which student has the most precise data? Student A Student B Cannot be determined Student C 15 / 16 A and B both wash cars and change oil. Currently, each man washes and changes oil by himself, but the process takes lots of time. they would MOST LIKELY improve their efficiency if A and B reduce the number of cars they wash A & B wash a car and change oil together A washes car while B changes oil A washes B car while B washes A's car 16 / 16 A chemist who frequency carries out the same complex experiment is likely to have high _____. Precision Error None of the above Accuracy Your score is LinkedIn Facebook VKontakte 0% Restart quiz
