Rolinda’s first five Spanish test scores are 85, 85, 60, 62, and 59. a. Find the mean, the median, and the mode of Rolinda’s Spanish test scores. Round your answers to the nearest tenth, if necessary. b. Which of these measures best supports Rolinda’s claim that she is doing well in her Spanish class? c. Why is Rolinda’s claim misleading?
a. mean: 7.2 median: 62 mode: 85
b. her mode
c. because only 2 out of 5 of her test scores are passing grades
a. The mean=70.2 I added all the numbers then divided it by five because that’s how many scores there are. Median=62 that is the middle value of all numbers. Mode=85 because 85 appears the most than any other number.
b. The mode because she got that score more than once
c. because each time she takes the test she gets better scores each time and on the last two she scored the same
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a. To find the mean (average) of Rolinda's Spanish test scores, we add up all the scores and divide by the total number of scores. So, adding up the scores, we get:
85 + 85 + 60 + 62 + 59 = 351
Dividing by the total number of scores (5 in this case), we get:
351 / 5 = 70.2 (rounded to the nearest tenth)
To find the median, we arrange the scores in ascending order and find the middle value. In this case, the scores in ascending order are:
59, 60, 62, 85, 85
The middle value is 62, so that is the median.
To find the mode, we look for the score that appears most frequently. In this case, both 85 and 60 appear twice, more than any other score. Therefore, we have two modes: 85 and 60.
b. The mean is generally the most commonly used measure to determine overall performance because it considers all the scores equally. In this case, the mean of Rolinda's test scores is 70.2, which gives an average performance.
c. Rolinda's claim that she is doing well in her Spanish class can be misleading because the mean is influenced by outliers or extreme scores. In this case, we see that she scored relatively low on two tests (60 and 59), which brings down the overall mean. The median, which is not affected by outliers, gives a better representation of the typical score in this case (62). Additionally, it's worth noting that the mode does not necessarily indicate how well someone is doing; it simply shows the most frequently occurring score(s). Therefore, relying solely on the mean can be misleading in this scenario.
What don't you understand about this assignment?
A.
C.