#4 (4a) You have a data set with a mean of 50 and a standard deviation...
Suppose you have a data set and the mean, median and the standard deviation are 10, 10 and 2, respectively. Someone multiplies all your data points by 3. Call these data the new data. The mean of the new data will be _______________________ The Median of the new data will be _______________________ The standard deviation of the new will be _______________________ The variance of the new will be _______________________––
Question 4 0.5 pts A data set has a mean of 44. In this data set, a raw score X-40 corresponds to the standardized score z-1. What is the standard deviation for this data set? Hint:take advantage of the formula for Z-score Question 5 0.5 pts A data set has a standard deviation of 2.5. In this data set, a raw score X-30 corresponds to the standardized score z = 1.30. What is the mean of this data set? Hint:take...
Suppose you have a normally distributed set of data pertaining to a standardized test. The mean score is 1000 and the standard deviation is 200. What is the z-score of 1600 point score?
Suppose you have the following data, with a mean and standard deviation of 5 and 2.1 3 3 4 5 7 8 If you were to subtract 2 from every observation, what change - if any- would you see in the transformed mean and standard deviation? the mean and standard deviation would decrease the mean wold stay the same but the standard deviation would decrease the mean and standard deviation would stay the same the mean would decrease but the...
Suppose a set of data has a sample mean of 106 and a sample standard deviation of 19.8. What is the Z-score for the value 122.0? Round the 2-score to two decimal places. Your Answer: Answer
For this question, you are required to find the standard deviation for a set of data. The answer alone will not achieve full marks. There are many tools available to calculate the standard deviation. Here you are required to use several of the tools and show your working out to earn the marks. The data is the test results of 21 students who sat a mathematics quiz worth 100 marks. Results: 60, 47, 17, 43, 30, 90, 77, 61, 54,...
A population data set is right-skewed and has a mean of 100 and a standard deviation of 5. Which of the following is true regarding the sampling distribution of the mean for a sample size of 1,000? Select one: It's standard deviation is 5. It's shape is right-skewed It's standard deviation is 0.158. It's mean is 10.
The mean of a set of data is 3.48 and its standard deviation is 3.73. Find the z score for a value of 7.16 0.99 1.29 0.89 1.09
The mean of a set of data is 4.68 and its standard deviation is 2.83. Find the z score for a value of 9.38. 1.83 1.49 1.66 1.96 ?
a researcher has a data set with a mean score of 45 and standard deviation of 15 . Assuming that the data set is normally distributed, the researcher would expect approximately 95% of the data to fall between a 35 and 55 b 30 and 60 c 40 and 50 my answer is c can some one draw the bell curve and show me step by step how this is done . thanks