72, 80, 74, 68, 65, 66, 72, 70, 65, 80, 75
Jennifer's recent golf scores are shown. What is her mean score, rounded to the nearest tenth?
Responses
A 71
B 72
C 85
D 71.5
E 65.5
To find the mean score, you need to add up all the scores and divide by the total number of scores.
Total score = 72 + 80 + 74 + 68 + 65 + 66 + 72 + 70 + 65 + 80 + 75 = 747
Number of scores = 11
Mean score = Total score / Number of scores = 747 / 11 ≈ 67.9
Rounded to the nearest tenth, Jennifer's mean score is 67.9, which is closest to option A, 71. Therefore, the answer is A) 71.
Consider the dot plot which shows the distribution of data collected on the amount of time Jane spent drying her hair each morning. Which statement BEST describes the center of the data?
Responses
A median is greater than the mean
B median is less than half the range
C median is less than the mean
D mean is greater than the median
E mean is less than half the range
Since we do not have a dot plot to refer to, we cannot answer this question accurately without the visuals.
Consider the dot plot which shows the distribution of data collected on the amount of time Jane spent drying her hair each morning. Which statement BEST describes the center of the data?
Responses
A median is greater than the mean
B median is less than half the range
C median is less than the mean
D mean is greater than the median
E mean is less than half the range
Since there is no dot plot provided, we cannot accurately determine the center of the data.
Find the mean of these numbers.
12, 9, 11, 8, 9, 12, 9
Responses
A 8
B 10
C 12
D 9
To find the mean score, we need to add up all of Jennifer's scores and divide by how many scores there are.
To begin, let's add up all of Jennifer's scores:
72 + 80 + 74 + 68 + 65 + 66 + 72 + 70 + 65 + 80 + 75 = 767
Next, we count how many scores there are:
There are 11 scores.
To find the mean, we divide the sum of the scores by the number of scores:
Mean = Sum of scores / Number of scores
Mean = 767 / 11
Mean = 69.72727272727273
Finally, since the question asks for the mean rounded to the nearest tenth, we round 69.72727272727273 to the nearest tenth, which is 69.7.
Therefore, the answer is NOT given in the provided options.