Question

help please will medal

Answer 1

A highway speed monitor is located on the side of the road that has a speed limit of 45 mph. The system records the speeds of passing vehicles. The data below shows the speeds of the first 9 cars that pass.

46 56 45 44 45 61 55 53 39

What is the standard deviation, to the nearest tenth, based on the posted speed limit, 45 mph?
a0

The tenth car traveling on this road breaks down and is being pushed by its owners as it passes the speed monitor. A speed of 1.5 mph is recorded. The measure of central tendency most affected by this tenth speed is the
a1

What is the new standard deviation, to the nearest tenth, after the tenth speed is recorded?

Answer 2

@stuck-help @sleepyhead314 @Jaynator495

Answer 3

i dont know what deviation is

Answer 4

@Monkey4224

Answer 5

I went to an online standard deviation calculator. The results are attached.

https://www.easycalculation.com/statistics/standard-deviation.php

Answer 6

I'm thinking that the sample standard deviation is the one to use.

Answer 7

i have no idea what standard deviation is. sorry.

Answer 8

Here are the results from the site with the 10th car included.

You may want to verify the results by using the standard deviation formula or your calculator.

Answer 9

Read more here: http://www.mathsisfun.com/data/standard-deviation.html