Topic:

assignment

Paper details: 1- This discussion is associated with your Chapter 6 (Smith and Davis) material. You’ll post your own original comment, and then reply to one group member’s comment.

First, post a comment that contains the following information:

Design your own original study! that is, create a scenario (just like the ones in your individual assignment # 2) that includes an independent and dependent variable as well as a confound variable. You can take a look back at your individual assignment # 2 to remember what these scenarios look like. This needs to be your own original idea, please do not copy and paste study scenarios from the internet.

1.1-Instructions: This assignment is related to your Chapter 3 (Salkind) material. It is not timed but the assignment must be submitted by the specified due date. Individual Assignments that are not submitted will receive a grade of “0”. This assignment is worth 10 points.

Always save a copy of your responses to the individual assignments before you submit them (either by taking a picture of your answers or by copying and pasting your answers into a word document). You will need them for you discussion assignment and you will not always have access to your responses after you submit them.

In baseball, a player’s “batting average” is one way to measure how well a player is batting that season. It is calculated from the number of times they hit the ball and get on a base (hits) divided by the number of total times they were at bat (a higher batting average is a good thing–if a player has a higher batting average it means they were able to get on base more, they struck out less).

Below are the batting averages of 15 players from the LA Dodgers and Houston Astros from 2021 regular season (these are real data from this season!).

Batting Averages for 15 Dodgers Players:

Batting Averages for 15 Astros Players:

0.249 0.277

0.278 0.278

0.258 0.294

0.264 0.279

0.297 0.319

0.254 0.257

0.306 0.27

0.254 0.172

0.165 0.311

0.338 0.235

0.27 0.259

0.242 0.26

0.215 0.211

0.215 0.304

0.169 0.176

1-Using the data provided, what is the mean for the “batting average” of the 15 Dodgers players? Round your answer to three decimal places.

2-Using the data provided, what is the variance of the “batting average” for the 15 Dodgers players? Round your answer to three decimal places.

3-Using the data provided, what is the standard deviation of the “batting average” for the 15 Dodgers players? Round your answer to three decimal places.

4-Using the data provided, what is the mean “batting average” for the 15 Astros players? Round your answer to three decimal places.

5-Using the data provided, what is the variance of the “batting average” for the 15 Astros players? Round your answer to three decimal places.

6-Using the data provided, what is the standard deviation of the “batting average” for the 15 Astros players? Round your answer to three decimal places.

7-Show your work here! Upload a picture or file of your work for the calculation of the variance and SD for both groups. You can upload one (or multiple) pictures. To upload a file click on the three dots on the menu below, then click on the “picture icon” and then click “upload image”. A photo of your hand calculations and “the table” you used to calculate them would be sufficient! If you are using an iphone, please convert your image to a .jpeg or .docx format (you can paste the image into a word document and submit that). If you submit using the. HEIC format, we will be unable to read your answer.

8-Which team seems to have more variability, the Astros or the Dodgers? (careful: they’re very close!).

Group of answer choices

Neither team has any variability

Astros

Dodgers

9-Which team has the higher mean?

Group of answer choices

Astros

Dodgers

neither team has a higher mean

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