Question: Could you please explain these so if I got a similar question I could answer. Thanks. 1. Suppose a group of scores has a mean

Could you please explain these so if I got a similar question I could answer. Thanks.

1. Suppose a group of scores has a mean of 40 and a standard deviation of 10. A score of 80 would equate to a standard score of:

2. Suppose that a test taker earned 125 raw score points on a vocabulary test where the normative sample averaged 100 points (with SD of 15 points). Suppose, in addition, he earned 110 raw score points on a spatial thinking test where the normative sample averaged 90 points (with SD of 20 points). In which skill area does he show greater aptitude, vocabulary or spatial thinking?

3. What is the relationship between the variance and the standard deviation?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Could you please explain these answers so if I got a similar question I could answer. Thanks. 1. If a test has a mean of 500 and standard deviation of 100 (assuming a normal distribution). With N =...

Please a short answer please simple answer, one by one zeinab kourouma Date : 6 1 02125 Name : Unit 7 CABS 2 Quick Review 1. Use the normal curve to fill in the blanks describing how the proportions...

Please a short answer please simple answer zeinab kourouma Date : 6 1 02125 Name : Unit 7 CABS 2 Quick Review 1. Use the normal curve to fill in the blanks describing how the proportions relate to...

A 1 2 B C D E F G H I J K L M N O P Name: MTH 243 Lab 1 3 4 5 The Normal Distribution We will examine the Normal Distribution and use area under the curve to compute probabilities. 6 Notes &...

Activity 4MATH 250 Elements of StatisticsSummer 2016 DUE DATE: 06/29/2016 General Instructions: Please place your name above, then complete the following questions. NOTE: Read th feel for the...

14. At the local university a survey was being done on whether or not the students liked the cafeteria food. The survey was located in the college newspaper and was to be filled out and sent to the...

please explain step by step. thanks 5.4.13 Question Help For the following situation, find the mean and standard deviation of the population. List all samples (with replacement) of the given size...

I need help. Please answer the full question. Many thanks! 3. Consider the following regression log(c)=0+1log(q)+2log(q)2+u Where c is cost of a firm, and q is the output of the firm. The regression...

please explain your answers 2 True/False 4 points per question. Total: 32 points. Please explain your reasoning just a sentence or two are fine, but you are also graded on the explanation. Note that...

Write a short not Naval power At and from the sea LOE.

What is the difference between the general and specific business environments?

Which of the following bond ratings would indicated that a bond is high risk, all else held equal?a . \ ( D \ ) b . AAAc. BBBd . A

Based on our work with the Goliath case, which of the following statements is most likely to be correct in a divisionalised entity with sourcing autonomy for divisional managers

Th ey have to wait a long time for an appointment?

5.3 Using the uniform probability density function shown in Figure 5.7, find the probability that the random variable X is less than 1.4.

What specifi c friendliness behaviors can help broaden your customers tolerance zones?