Mathematics, 18.10.2019 22:00 webbjalia04
Ascience teacher gives a test with 15 questions. this teacher is a hard grader. the teacher assigns points in the following manner: a correct answer =+1 point, an incorrect answer =−1 point, no answer =0 points. so scores on the test could range from +15 to −15. the teacher’s assistant calculates the standard deviation for scores on the test and reports sd =−2.3. what do we know?
- the standard deviation was calculated incorrectly.
- most students received negative scores.
- most students scored below the mean.
- there is an outlier that has a negative value close to -15.
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 22:40, michaellagann2020
Adeli owner keeps track of the to-go orders each day. the results from last saturday are shown in the given two-way frequency table. saturday's to-go deli orders in person by phone online total pick up 38 25 31 94 delivery 35 28 34 97 total 73 53 65 191 what percent of the to-go orders were delivery orders placed by phone? a. 14.66% b. 38.41% c. 28.87% d. 52.83%
Answers: 2
Mathematics, 22.06.2019 01:10, onlymyworld27
To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%
Answers: 3
Mathematics, 22.06.2019 01:30, mparra4761
Aresearch study is done to find the average age of all u. s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample
Answers: 2
You know the right answer?
Ascience teacher gives a test with 15 questions. this teacher is a hard grader. the teacher assigns...
Questions in other subjects:
Mathematics, 18.07.2019 07:40
English, 18.07.2019 07:40
Physics, 18.07.2019 07:40
History, 18.07.2019 07:40
