Which of the following statement is TRUE ? Group of answer choices The formula to compute the variance for a sample and for a population are the same.  The variance is the square of the standard deviation. The formula to compute the standard deviation for a sample and for a population are the same.  The standard deviation is the square of variance.

Can someone help me out with these questions.

Cigarette Taxes The increases (in cents) in cigarette taxes for 14  states in a 6-month period are , 51 , 60 , 12 , 20 , 30 , 40 , 32 , 34 , 42 , 45 , 50 , 40 , 18 31   (a) Find the range. The range is    .         (b) Find the variance and the standard deviation. Assume the data represent samples, and use the shortcut formula for the unbiased estimator to compute the variance and standard deviation. Round your answers to at least one decimal place. The variance is /The standard deviation is              (c) Use the range rule of thumb to estimate the standard deviation. Round your answer to one decimal place. Using the range rule of thumb,  ≈s.         (d) Compare the estimate to the actual standard deviation. The range rule of thumb ▼(Choose one) a reasonable estimate for the standard deviation for this data.

Data Set 1: 2,2,3,4,4 Solve for the RANGE.Solve for the VARIANCESolve for the STANDARD DEVIATION.Solve for COEFFICIENT OF VARIATION.

For computing the variance this number is called as the value that is added or subtracted from the most probable value a. accuracy b. mistake c. error d. probable error

In reality, there were many students who took the midterm. Take a random sample of 5 students and record their scores.  Then find the mean.  Scores:__________________________ Mean:___________ Take another random sample of 5 students and record their scores.  Then find the mean. Scores:__________________________ Mean:___________   Three more times:   Scores:__________________________ Mean:___________   Scores:__________________________ Mean:___________   Scores:__________________________ Mean:___________ Write each mean on a different sticker and put the stickers in the appropriate location on the poster at the front of the room.   2. Copy down the dot plot that is created on the poster. 3. What does each dot on the poster represent?

Solve last two parts of c Variance and standard deviation only

Scores of 5 adults include: 18,15,20,22,25 What's the range? Please caculate the variance and standard deviation of the sample