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- 1. Multiple Choice
The symbol $\sigma$ or s refers to

the mean

the standard deviation

the standard error of the mean

the chi square

- 2. Multiple Choice
SE refers to the...

mean

standard deviation

standard error of the mean

chi square

- 3. Multiple Choice
The symbol $\Sigma$ means

sample mean

square root of all values

sum of all values

sample size

- 4. Multiple Choice
Degrees of freedom is calculated by

dividing the standard deviation by the square root of the sample size

subtracting one from the sample size

adding together all values and dividing by the sample size

squaring the difference between the observed and expected values

- 5. Multiple Choice
The mean value of a data set is calculated by...

dividing the standard deviation by the square root of the sample size

subtracting one from the sample size

adding together all values and dividing by the sample size

squaring the difference between the observed and expected values

- 6. Multiple Choice
The middle number in a set of data is called the...

mean

standard deviation

median

mode

- 7. Multiple Choice
What is the standard error of the optimum soil temperature for germination rate?

1.78

0.91

2.89

5.34

- 8. Multiple Choice
A farmer is told the average banana tree takes 12 months from the time the rhizome is planted until it yields fruit. His fields take 11, 14, 16, and 14 months. Is the null hypothesis of 12 months accepted?

accepted at 2.08

accepted at 1.44

accepted at 8.33

rejected at 8.33

- 9. Multiple Choice
Which of the following statements is true pertaining to the graph given?

There are more Rainbow Pitta than Cockatoo

There are 17.5 million Guildian Finch

Guildian Finch have the least accurate population measurement.

Cockatoo and Rainbow Pitta have no statistical difference in population.

- 10. Multiple Choice
Which of the following would lower a Chi Square value?

Increase the sample size

Decrease the sample size

Increase the number of sample groups

A smaller difference between observed and expected values

- 11. Multiple Choice
Which of the following scenarios would lead to a large standard deviation, but a low standard error of the mean?

1,650 students at FHC are surveyed on how much they like Genetics on a scale form 1 - 100.

450 doctors across the country were surveyed on the number of hours they spend at work.

The length of 12 roly-poly bugs is taken for St. Charles County.

Steve Prefontaine 1,200 meter time is recorded for 5 trials on different days.

- 12. Multiple Choice
What is the mode for this data: 2, 4, 2, 3, 2, 4, 3, 6, 5

2

3

3.44

4

- 13. Multiple Choice
You roll a dice 54 times and get the following results: 6 ones, 10 twos, 9 threes, 12 fours, 8 fives, and 9 sixes. Do you accept or reject the null hypothesis?

No, chi square value is 2.22

No, chi square value is 4.47

Yes, chi square value is 2.22

Yes. chi square is 4.47

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