Lab Quiz 2

Question 1

a collection of data whose properties are analyzed. The population is thecompletecollection to be studied, it containsallsubjects of interest

Answer 1

population

Question 2

asubset of the

population of interest

Answer 2

sample

Question 3

We strive to be _____ in our sampling

Answer 3

unbiased

Question 4

Descriptive statistics

Answer 4

describes sample data

Question 5

Inferential statistics

Answer 5

draws conclusions about the population from sample data

Question 6

What are examples of descriptive statistics?

Answer 6

mean, median, mode, variance, standard deviation

Question 7

Mean

Answer 7

sum of all data points divided by the number of data points

Question 8

median

Answer 8

in the middle when they are in order

Question 9

Mode

Answer 9

the number that appears most frequently

Question 10

Variance

Answer 10

describes how far the numbers are away from the mean

Question 11

What was the goal of experiment 2-2?

Answer 11

To determine if the 2 bugs can be differentiated by their reactions to light

Question 12

What was the null hypothesis is 2–2?

Answer 12

The 2 isopods have equal light preference

Question 13

What does it mean to fail to reject the null?

Answer 13

They probably came from the same population

Question 14

What does it mean to reject the null?

Answer 14

They most likely didn’t come from the same data set

Question 15

What is the p-value?

Answer 15

the estimated probability of failing to reject the null

Question 16

high p value

Answer 16

high probability of failing to reject the null

Question 17

low p value

Answer 17

low probability of failing to reject the null

Question 18

What was the number that p was less than or greater than?

Answer 18

0.05

Question 19

P> 0.05

Answer 19

null accepted

Question 20

How do you get a p value?

Answer 20

t test and f tests

Question 21

Investigates whether or not thenull hypothesis, that the means of twonormally distributedpopulations are equal, is true.

Answer 21

T-test

Question 22

Investigates whether or not thenull hypothesis, that the variance of twonormally distributedpopulations are equal, is true.

Answer 22

F-test

Question 23

What is the objective of lab 3?

Answer 23

to understand the method by which plants lose water

Question 24

when plants lose water it is called….

Answer 24

transpiring

Question 25

What is the normal transpiration process for plants?

Answer 25

water is taken up through the soil via root hairs, It is then pulled up through the xylem to the leaves via capillary action, and finally The water then evaporates through stomatal pores in the leaves

Question 26

A pore, found in the epidermis of leaves, stems and other organs which regulates gas exchange

Answer 26

stoma

Question 27

Some plants have stomata on both sides of the leaf while others…

Answer 27

only have stomata on one side to minimize water loss

Question 28

Gas exchange as well as water loss

Answer 28

Open stoma

Question 29

Reduced gas exchange and water loss

Answer 29

Closed stoma

Question 30

Each stoma is comprised of two guard cells which surround a central ____

Answer 30

pore

Question 31

The opening of the stoma is due to guard cells taking in water by _____

Answer 31

osmosis

Question 32

Plants have reduced the rates of transpiration through adaptations which ____ surface area to volume of the leaf

Answer 32

reduce

Question 33

What are the physical adaptations of plants?

Answer 33

reduced the rates of transpiration, Number and distribution of stomata, Presence of a cuticle to prevent desiccation, long root system, and Leaves modified to spines to reduce water loss

Question 34

P

Answer 34

null rejected