# Individual Assignment #6 – Is That Feature Standard?

## Quiz Instructions

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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.

In baseball, you can measure a player’s RBIs (or Runs Batted In), which refers to the number of times a batter makes a play that allows a run (point) to be scored for their team. Below are the total RBIs from 20 players from the regular season for the two teams that went to the world series in 2019, the Houston Astros and the Washington Nationals.

##### Need an original paper done on this topic?
Runs Batted In per Team
Astros Nationals
78 49
90 65
74 126
104 110
112 57
96 50
59 62
56 43
40 56
7 63
11 42
58 27
34 8
17 40
5 3
21 10
9 4
10 2
10 1
2 2

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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.

In baseball, you can measure a player’s RBIs (or Runs Batted In), which refers to the number of times a batter makes a play that allows a run (point) to be scored for their team. Below are the total RBIs from 20 players from the regular season for the two teams that went to the world series in 2019, the Houston Astros and the Washington Nationals.

Runs Batted In per Team
Astros Nationals
78 49
90 65
74 126
104 110
112 57
96 50
59 62
56 43
40 56
7 63
11 42
58 27
34 8
17 40
5 3
21 10
9 4
10 2
10 1
2 2

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Question 1 1 pts
Using the data above which of the following is the mean for the Nationals?

45.632

44.650

41.000

27.518

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Question 2 1 pts

Using the data above, which of the following is the variance for the Nationals?

1384.766

23820

35.553

1253.684

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Question 3 1 pts
Using the data above, which of the following is standard deviation for the Nationals? Round to three decimal places.

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Question 4 1 pts
Using the data, which of the following is the mean for the Astros?

44.650

45.632

27.518

41.000

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Question 5 1 pts
Using the data, which of the following is the variance for the Astros?

1253.684

1384.766

23820

35.553

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Question 6 1 pts
Using the data which of the following is standard deviation for the Astros?

36.270

38.763

35.407

37.212

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Question 7 1 pts
In general, why should we use the standard deviation rather than the variance?

The standard deviation is more frequently used in psychology than the variance, primarily because the standard deviation is better expressed in the same units as the original data set.

The standard deviation is the same as the mean.

The standard deviation is a measure of central tendency.

The standard deviation is a smaller number.

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Question 8 1 pts
Who seems to have more variability, the Astros or the Nationals?

Neither group show variability

Astros

Nationals

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Question 9 1 pts
Who has the higher mean?

Astros

Nationals

Neither group shows variability

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Question 10 1 pts
In general, why use the estimate of n – 1 rather than n in the computation of the standard deviation and variance?