Mean - find the sum of that set of numbers then divide your answer by the total of numbers in the set. E.g if the numbers are 10, after finding the sum you divide it by 10 since the numbers are ten.
Median - first arrange the numbers from small to big than find the middle number and if they are two like when the numbers are of an even number than you add the two numbers and divide answer by 2.
Range - arrange the numbers from small to big than minus the smallest one from the biggest number.
Am not sure about the last one but I hope I was able to help you with this three.
Answer:
BD = 28
Step-by-step explanation:
BC and CD are within line BD, so add those to make up for the length of BD
21 + 7 = 28
The answer is x=13 because the equations equal each other
The flashlights should be the same for both branches. If one battery last longer than the other maybe that is because of how each flashlight use the energy of them. You can try, for example, mxing the flashlights so that 50 of each kind are fitted with each of the brands.
Another problem is that you cant meassure correctly the lifetime of a battery if it lasts longer than the 72 hours you are using it.
Also, you might want to study more than the mean lifetime. You can try finding the standard deviation of each sample for example so that you can see if there is a branch that suffer more about bad conditions of use and is less consistent providing a good preformance.
Answer:
Something to raise the moist air to form the clouds and cause precipitation. An example of lift is warm air colliding with cold air and being forced to rise over the cold dome. The boundary between the warm and cold air masses is called a front.
Step-by-step explanation:
