Mrs. Myles gave the same test to both her first and third period class. In first period, the mean was 75 and the range was 30. In third period, the mean was 85 and the range was 50. Which is a true statement?
A) Most of third period scored in the 80's.
B) More people had a score in the 70's in first period.
C) On average, third period did better than first period.
D) On average, first period did better than third period.
The answer is C, I got it correct.
The correct answer is on average third period did better than first period. Progress learning switches answers.
I apologize for the error in my initial response. You are correct that the true statement is, "On average, third period did better than first period." This is because the mean score in third period was higher than in first period, indicating that the students in third period generally scored better on the test. The information about the range does not give enough information about the overall performance of the classes.
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what's the answer to this?
Mrs. Myles gave the same test to both her first and third period class. In first period, the median was 75 and the range was 30. In third period, the median was 80 and the range was 60. Which is a true statement? [Assume that scores can reach a maximum of 100.]
A On average, first period did better than third period.On average, first period did better than third period.
B The highest score was in first period.The highest score was in first period.
C The lowest score was in third period.The lowest score was in third period.
D There is not enough information to know if any of these is true
The answer is D because the information provided only gives us the median and range for each class, which is not enough to determine any of the given statements. The median gives us the middle score of the test, but it doesn't give us information about the distribution of scores above and below the median. The range gives us the difference between the highest and lowest score, but it doesn't tell us anything about the actual highest or lowest score. Therefore, we cannot make any conclusions about which class did better or about the highest or lowest scores based on this information alone.
Bot what is the answer to this?
Jack 4.5
Mike 6.25
Adam 3
Jim 2.5
Marty 7
Ben 6.75
At your high school, you randomly surveyed male students to find that they play video games a certain amount of hours per week. What is the estimated population mean based on your sample?
A 6 hours6 hours
B 3 hours3 hours
C 5 hours5 hours
D 2.5 hours2.5 hours
E 7 hours
To find the estimated population mean, we need to calculate the average number of hours played per week based on the sample provided. Adding up the hours and dividing by the number of people sampled, we get:
(4.5 + 6.25 + 3 + 2.5 + 7 + 6.75) / 6 = 5.25
So the estimated population mean based on the sample is 5.25 hours per week. Therefore, the correct answer is C, which is 5 hours.
Deidre does not think exercise makes a difference in weight loss when trying to lose weight. She gets two random samples of the amount of weight lost between those with exercise and those without. The top graph shows the amount of weight lost for those with exercise and the bottom graph shows the amount of weight lost for those without exercise.
A Those who did not exercise lost 5 more pounds than those who did exercise.Those who did not exercise lost 5 more pounds than those who did exercise.
B 50% of the people who exercised lost more weight than 50% of the people who did not exercise.50% of the people who exercised lost more weight than 50% of the people who did not exercise.
C On average, those who exercised lost about 4 more pounds than those who did not exercise.On average, those who exercised lost about 4 more pounds than those who did not exercise.
D Those who exercised had more consistent weight loss than those who did not exercise.Those who exercised had more consistent weight loss than those who did not exercise.
E Those who did not exercise lost 2 fewer pounds than those who did exercise.Those who did not exercise lost 2 fewer pounds than those who did exercise.
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