According to the videos in the module, which statistical test would best be used to see...

According to the videos in the module, which statistical test would best be used to see whether there is a relationship between a dragon's color (red or green) and a dragon's behavior (dangerous, moody, or friendly)?

A: Chi square

B: T-test

C: ANOVA

D Pearson's R (correlation)

According to the videos in the module, what test would Helen use to see if there is a relationship between the number of packets of Choconutties she sells and the temperature? (Helen thinks that the colder it is, the more chocolate she sells.)

A: Chi square

B: T-test

C: ANOVA

D Pearson's R (correlation)

https://www.youtube.com/watch?time_continue=290&v=jhz0ubW0EWk&feature=emb_logo

Solutions

Expert Solution

Q 1 ) we want to find the test statistical test would best be used to see whether there is a relationship between a dragon's color (red or green) and a dragon's behavior (dangerous, moody, or friendly)

Chi Square statistic is used to test relationships between categorical variables.

The null hypothesis of the Chi-Square test is that no relationship exists on the categorical variables in the population; they are independent.

Hypothesis are as follows:

Ho: There is no relationship between dragon's color (red or green) and a dragon's behavior (dangerous, moody, or friendly)

v/s

H1: There is relationship between dragon's color (red or green) and a dragon's behavior (dangerous, moody, or friendly)

Option A) Chi square is correct

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2) we want to check whether there is a relationship between the number of packets of Choconutties she sells and the temperature (Helen thinks that the colder it is, the more chocolate she sells.)

By using Pearsons R ( Correlation) we can find it

Pearsons Correlation coefficient is used to check association between two variables

Option D) Pearson's R (correlation) is correct

================================================================================

orchestra answered 1 year ago

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