PHYS 261 QUIZZES QUESTIONS WITH
VERIFIED ANSWERS
~LAB 1~ - ANSWER ~LAB 1~
If you are using the Logger Pro interface to find the average value of some
data, the fastest way to do this is to highlight the data you want to average
and use the ______________ tool. - ANSWER Statistics
If you are taking measurements of a quantity that is constant and you get
10 slightly different values, the best way to analyze the data to get an
estimate of the quantity's value is to - ANSWER compute an average of the
10 values
Comparing the two data sets, set A with points 5, 4, 4.5, 5, 4 and set B with
4.7, 4.5, 4.4 4.5, 4.4, which has the larger standard deviation? - ANSWER
Set A
When you are told an experiment has an average value of 3.2 and a
standard deviation of 0.25 it means that - ANSWER About two out of three
values in the experiment fall in the range 3.45 and 2.95
If you are told that the temperature is increasing at a rate of 0.75 degrees a
second in your experiment at a time 2 seconds into the data collection run,
the best way to check the rate of change is to - ANSWER find the slope of
the temperature curve by selecting points around 2 seconds to see if it is
close to 0.75
In Excel, the way to enter an equation in a cell is to - ANSWER put a "="
sign in the cell before the equation
The reason you have to square the differences between the values you
measure and their average value when computing a standard deviation
, about the mean value is that the sum of the deviations is always -
ANSWER zero if you don't round off so the sum cannot be used to
measure the average spread in the values
You are given the following set of data points:
xy
12
2 2.5
3 3.0
4 3.5
The slope of the data is closest to - ANSWER 0.5
The intercept for the data set:
xy
12
2 2.5
33
4 3.5 - ANSWER is 1.5
The type of Chart in Excel that we use to plot data so the first column is on
the x-axis and the second column is on the y-axis is - ANSWER XY Scatter
~LAB 2~ - ANSWER ~LAB 2~
The built-in motion detector in the Go-Direct sensor cart reports the position
traveled by the cart. If the cart is pushed in the direction pointed by the
arrow on the top of the cart, - ANSWER the measured distance increases
and the velocity it records is positive
On a level track, after the cart is given an initial push we expect the
average acceleration (neglecting friction) to be close to - ANSWER zero
On an inclined track we expect the average acceleration of a cart released
from rest at the top of the track as it rolls down the track to be - ANSWER a
negative constant
VERIFIED ANSWERS
~LAB 1~ - ANSWER ~LAB 1~
If you are using the Logger Pro interface to find the average value of some
data, the fastest way to do this is to highlight the data you want to average
and use the ______________ tool. - ANSWER Statistics
If you are taking measurements of a quantity that is constant and you get
10 slightly different values, the best way to analyze the data to get an
estimate of the quantity's value is to - ANSWER compute an average of the
10 values
Comparing the two data sets, set A with points 5, 4, 4.5, 5, 4 and set B with
4.7, 4.5, 4.4 4.5, 4.4, which has the larger standard deviation? - ANSWER
Set A
When you are told an experiment has an average value of 3.2 and a
standard deviation of 0.25 it means that - ANSWER About two out of three
values in the experiment fall in the range 3.45 and 2.95
If you are told that the temperature is increasing at a rate of 0.75 degrees a
second in your experiment at a time 2 seconds into the data collection run,
the best way to check the rate of change is to - ANSWER find the slope of
the temperature curve by selecting points around 2 seconds to see if it is
close to 0.75
In Excel, the way to enter an equation in a cell is to - ANSWER put a "="
sign in the cell before the equation
The reason you have to square the differences between the values you
measure and their average value when computing a standard deviation
, about the mean value is that the sum of the deviations is always -
ANSWER zero if you don't round off so the sum cannot be used to
measure the average spread in the values
You are given the following set of data points:
xy
12
2 2.5
3 3.0
4 3.5
The slope of the data is closest to - ANSWER 0.5
The intercept for the data set:
xy
12
2 2.5
33
4 3.5 - ANSWER is 1.5
The type of Chart in Excel that we use to plot data so the first column is on
the x-axis and the second column is on the y-axis is - ANSWER XY Scatter
~LAB 2~ - ANSWER ~LAB 2~
The built-in motion detector in the Go-Direct sensor cart reports the position
traveled by the cart. If the cart is pushed in the direction pointed by the
arrow on the top of the cart, - ANSWER the measured distance increases
and the velocity it records is positive
On a level track, after the cart is given an initial push we expect the
average acceleration (neglecting friction) to be close to - ANSWER zero
On an inclined track we expect the average acceleration of a cart released
from rest at the top of the track as it rolls down the track to be - ANSWER a
negative constant
