### Sample Statistic, SS, Sum of Squared Deviations, Mean, Variance – Exam

The key terms in these Statistic chapters include Sample, Sum of Squared Deviations, Mean, Population, Distribution, Variance, Population Variance, Sample Statistic, Standard Deviation, Sample Variance.

A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

**2**

What is the value of SS (sum of squared deviations) for the following population? Population: 1, 1, 1, 5

**12**

Which of the following is a consequence of increasing variability?

**The distance from one score to another tends to INCREASE, and a single score tends to provide a LESS accurate representation of the entire distribution**

Which of the following symbols identifies the population of scores? Scores 5, 2, 5, 4

**o**

What is the VARIANCE for the following population of scores? Scores: 5, 2, 5, 4

**1.5**

My electric bills for June, July and August last summer were $75, $75, and $150, respectively. What was the mean amount for the three bills?

**$100**

A population with a mean of u = 6 has EX = 54. How many scores are in the population?

**N = 9**

What is the value of SS for the following set of scores? Scores 1,1, 4, 0

**9**

A sample has a mean of M = 90. If each score in the sample is MULTIPLIED by 5, then what is the mean for the new distribution?

**450**

What is the value of SS (sum of squared dev.) for the following sample? Sample: 1, 1, 1, 7

**27**

A set of 10 scores has SS = 90. If the scores are a sample, the sample variance is ___, and if the scores are a population, the population variance is ____.

**s2 = 10; o2; = 9**

A researcher takes a sample from a population and computes a statistic for the sample. Which of the following statements is correct?

**If the sample statistic is EQUAL to the corresponding population parameter, then the statistic is unbiased**

A population has u = 50 and 0 = 5. If 10 points are added to every score in the population, what are the new values for the mean and standard devation.

**u = 60 and o = 5**

A set of n = 4 scores has a mean of u = 11. If 8 points are subtraced from one of the scores, what is the new value for the population mean?

**9**

A sample of n = 6 scores has a mean of M = 5. One person with a score of X = 12 is added to the distribution. What is the mean for the new set of scores?

**M = 6**

On an exam with a mean of u = 70, you have a score of X = 75. Which of the following values for the standard deviation would give you the highest position within the class?

**o = 1**

One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2. Which set of sample statistics would present the clearest picture of a real difference between the two treatments?

**M1 = 36, M2 = 40, and both variances = 6**

A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

**2**

What is the value of SS (sum of squared deviations) for the following population? Population: 1, 1, 1, 5

**12**

Which of the following is a consequance of increasing variability?

**The distance from one score to another tends to INCREASE, and a single score tends to provide a LESS accurate representation of the entire distribution**

Which of the following symbols identifies the population of scores? Scores 5, 2, 5, 4

**o**

What is the VARIANCE for the following population of scores? Scores: 5, 2, 5, 4

**1.5**

My electric bills for June, July and August last summer were $75, $75, and $150, respectively. What was the mean amount for the three bills?

**$100**

A population with a mean of u = 6 has EX = 54. How many scores are in the population?

**N = 9**

What is the value of SS for the following set of scores? Scores 1,1, 4, 0

**9**

A sample has a mean of M = 90. If each score in the sample is MULTIPLIED by 5, then what is the mean for the new distribution?

**450**

What is the value of SS (sum of squared dev.) for the following sample? Sample: 1, 1, 1, 7

**27**

A set of 10 scores has SS = 90. If the scores are a sample, the sample variance is ___, and if the scores are a population, the population variance is ____.

**s2 = 10; o2; = 9**

A researcher takes a sample from a population and computes a statistic for the sample. Which of the following statements is correct?

**If the sample statistic is EQUAL to the corresponding population parameter, then the statistic is unbiased**

A population has u = 50 and 0 = 5. If 10 points are added to every score in the population, what are the new values for the mean and standard devation.

**u = 60 and o = 5**

A set of n = 4 scores has a mean of u = 11. If 8 points are subtraced from one of the scores, what is the new value for the population mean?

**9**

A sample of n = 6 scores has a mean of M = 5. One person with a score of X = 12 is added to the distribution. What is the mean for the new set of scores?

**M = 6**

On an exam with a mean of u = 70, you have a score of X = 75. Which of the following values for the standard deviation would give you the highest position within the class?

**o = 1**

One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2. Which set of sample statistics would present the clearest picture of a real difference between the two treatments?

**M1 = 36, M2 = 40, and both variances = 6**

A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

**2**

What is the value of SS (sum of squared deviations) for the following population? Population: 1, 1, 1, 5

**12**

Which of the following is a consequance of increasing variability?

**The distance from one score to another tends to INCREASE, and a single score tends to provide a LESS accurate representation of the entire distribution**

Which of the following symbols identifies the population of scores? Scores 5, 2, 5, 4

**o**

What is the VARIANCE for the following population of scores? Scores: 5, 2, 5, 4

**1.5**

My electric bills for June, July and August last summer were $75, $75, and $150, respectively. What was the mean amount for the three bills?

**$100**

A population with a mean of u = 6 has EX = 54. How many scores are in the population?

**N = 9**

What is the value of SS for the following set of scores? Scores 1,1, 4, 0

**9**