Answer:
1. True
Room A and Room B has equal range of 37.
Room A Range: 98 - 61 = 37
Room B Range: 100 - 63 = 37
Note: To find the range, just subtract the highest value to the lowest value.
2. False
The mean score of room A (81) is actually higher than the mean score of room B (80.7).
Note: In finding the mean, just add up all the numbers and divide it by how manh numbers there are.
3. False
The median scores are not the same. Room A has the median score of 83 while Room B has the median score of 84.
Note: Median score is the middle number of in a sorted list of numbers.
4. False
The mode of Room A and Room B are equal. Room A has one mode (83, 83) and so is Room B (84, 84).
Note: Mode is the number that occurs frequently.
5. True
Room A has the sum of 729 while Room B has the sum of 727.
6. False
It must be 89 for her to get an average of 83. With 86, she will only get an average of 82.5.
7. True
468 divided by 20 is equal to 23.4
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Answers & Comments
Answer:
1. True
Room A and Room B has equal range of 37.
Room A Range: 98 - 61 = 37
Room B Range: 100 - 63 = 37
Note: To find the range, just subtract the highest value to the lowest value.
2. False
The mean score of room A (81) is actually higher than the mean score of room B (80.7).
Note: In finding the mean, just add up all the numbers and divide it by how manh numbers there are.
3. False
The median scores are not the same. Room A has the median score of 83 while Room B has the median score of 84.
Note: Median score is the middle number of in a sorted list of numbers.
4. False
The mode of Room A and Room B are equal. Room A has one mode (83, 83) and so is Room B (84, 84).
Note: Mode is the number that occurs frequently.
5. True
Room A has the sum of 729 while Room B has the sum of 727.
6. False
It must be 89 for her to get an average of 83. With 86, she will only get an average of 82.5.
7. True
468 divided by 20 is equal to 23.4