10. Plot the means of all six groups on a class dot plot.
1 answer:
Answer:
Check the dot plot below
Step-by-step explanation:
1) Generally, a dot plot graph is made up based on a Spread Measure Graph (on Excel). A dot plot is a simple graph Used for discrete and continuous variables, whether for univariate or multivariate statistics.
In this question, we have a dot plot of six groups means, notice that group 3 and group 5 had the same measure. Some dot plots use axis between their dots, to connect their information.
2) Retrieving the data from this original questionnaire, we have this table (check it below)
3) Then from these data we can construct from a spread measure graph, a dot plot, just adjusting lines, and the dots.
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Answer:
(a) Mean=74
(b) Median=70
(c) The best measure of center= Median.
Step-by-step explanation:
We have been given a data set of PSAT scores of Mrs. Turay's eight graders. We are asked to find mean and median of the given data set.
(a) Let us find mean of data set by dividing the sum of given scores by the number of students.
Therefore, the mean test score will be 74.
(b) Now let us find median of our given data set. We have been given that number of students is 10, therefore, our median will be the average of 5th and 6th term.
60, 62, 67, 69, 70, 70, 71, 75, 76, 120.
We can see that 5th term is 70 and 6th term is 70 as well.
Therefore, the median test scores will be 70.
(c) We can see that our data set has an outlier score as 120, which has increased the mean. Mean score is greater than median score. Since median is not affected by extreme value outliers, therefore, median will be the best measure of center for given test scores.