below are the dot plots for two data sets. (a dot plot is sometimes called a \line plot\.)\nfind the mean of…

below are the dot plots for two data sets. (a dot plot is sometimes called a \line plot\.)\nfind the mean of each data set.\nmean of data set a:\nmean of data set b:

below are the dot plots for two data sets. (a dot plot is sometimes called a \line plot\.)\nfind the mean of each data set.\nmean of data set a:\nmean of data set b:

Answer

Explanation:

Step1: Calculate sum for Data Set A

For Data Set A, we have 3 dots at 5, 1 dot at 6 and 3 dots at 7. The sum is $3\times5 + 1\times6+3\times7=15 + 6+21 = 42$. The total number of data - points is $3 + 1+3=7$.

Step2: Calculate mean for Data Set A

The mean of Data Set A is $\frac{42}{7}=6$.

Step3: Calculate sum for Data Set B

For Data Set B, we have 1 dot at 4, 3 dots at 5, 3 dots at 6 and 1 dot at 7. The sum is $1\times4+3\times5 + 3\times6+1\times7=4 + 15+18 + 7=44$. The total number of data - points is $1+3 + 3+1=8$.

Step4: Calculate mean for Data Set B

The mean of Data Set B is $\frac{44}{8}=5.5$.

Answer:

Mean of Data Set A: 6 Mean of Data Set B: 5.5