The mean of a data sample can be found by adding all the terms in the data sample and dividing the result by the number of terms. In the first case we have the following data sample:
The mean of this sample is:
The mean absolute deviation is the sum of the differences between each data value and the mean, divided by the number of data values, the formula is:
Therefore, we must calculate the positive difference between each value and the mean, add them up, and divide the result by the number of data points in the sample. In the case of the first sample we get:
Solving the operation:
If done this way, all the results for each data set must be correct.
The equation of a line is y = mx+b, where m is the slope. In this equation m = 3, so the slope is upward and to the right, above the 45-degree angle. Only graph J fits this description.
Answer:
Step-by-step explanation:
<u>Given equation:</u>
.
.
<u>Your answer will be Option D.</u>
Answer:
Tammy
Step-by-step explanation:
Tammy read 7.75 hours last month. Kelley read 7.69 hours
Jim read 7.075 hours.
We would arrange the hours of reading from smallest to the highest
7.075, 7.69, 7.75
The person who spent the most time reading is the person with the highest number of hours that was spent reading. This person is Tammy.
Therefore, person who spent the most time reading is Tammy because she read for 7.75 hours.
