Which value is not required for the chi‑square test? a. expected progeny counts b.expected progeny ratio...
Which value is not required for the chi‑square test?
a. expected progeny counts
b.expected progeny ratio
c. age of parents at the time of cross
d. degree of freedom
e. observed progeny counts
Homework Answers
c. age of parents at the time of cross
The chi-square test is used to determine if there is a significant difference between the expected frequencies and the observed frequencies in one or more categories.
The formula used to calculate a statistical value for the chi-squared test is:
where, ∑ = Sum, O = Observed frequency, E = Expected frequency.
Degree of freedom = No. of phenotypes - 1
Add Answer to:
Which value is not required for the chi‑square test?
a. expected progeny counts
b.expected progeny ratio...
Perform a chi-square test to determine if an observed ratio of 40 tall:10 dwarf pea plants...
Perform a chi-square test to determine if an observed ratio of 40 tall:10 dwarf pea plants is consistent with an expected ratio of 1:1 from the cross of Dd x dd. What is your degrees of freedom What is your critical value Is this observed ratio consistent with an expected ratio of 1:1? (yes or no)
How do you answer if your data support the expected ratio? Use a chi-square analysis to...
How do you answer if your data support the expected
ratio?
Use a chi-square analysis to test the expected ratio for the F2 of Cross C. Phenotype Observed Expected Expected (O-E) (O-E) (O-E) IE Number Fraction Number Yellow 10082 10248.0625 - 1610.0625 2516,75391 2.69 13/16 Purple 2531 3/16 2364.9375 166.0625 27576.7539111966 Total = Chi-square 14.35 Number of degrees of freedom= 2-1 = 1 Probability of a match= p<0.05 On the basis of your chi-square test, does your data support the...
What is the most likely goestypes of the F1 parents? Using a chi-square test, compare the...
What is the most likely goestypes of the F1 parents? Using a chi-square test, compare the observed numbers of progerry with those expected from the cross. What conclusions can you draw from the chi-square test. Explain biologically what the chi-square test is telling you about this cross? From the chi-squared test I conclude that these offspring ratios are not correlating to the given geno types of the F1 parents. Therefore I reject the counts of the offsprings present There could...
Which of the statements are correct? A condition for using the chi-square goodness-of-fit test is that...
Which of the statements are correct? A condition for using the chi-square goodness-of-fit test is that all expected counts must be at least two. A condition for using the chi-square goodness-of-fit test is the observations are based on a random sample. The chi-square goodness-of-fit test uses n − 5 degrees of freedom. A) I only B) II only C) I and II only D) II and III only E) I, II, and III
a) true b) false 42. For a chi-square distributed random variable with 10 degrees of freedom and a level of sigpificanoe computed value of the test statistics is 16.857. This will lead us to reje...
a) true b) false 42. For a chi-square distributed random variable with 10 degrees of freedom and a level of sigpificanoe computed value of the test statistics is 16.857. This will lead us to reject the null hypothesis. a) true b) false 43. A chi-square goodness-of-fit test is always conducted as: a. a lower-tail test b. an upper-tail test d. either a lower tail or upper tail test e. a two-tail test 44. A left-tailed area in the chi-square distribution...
Under which circumstances are chi-square tests biased? ___ if any expected value is less than 1.0...
Under which circumstances are chi-square tests biased? ___ if any expected value is less than 1.0 or > 25% of the expected values are less than 5.0 small sample size when there is 1 degree of freedom all of the above
True or false: regarding the chi-square test, the expected counts represent the frequency we would expect...
True or false: regarding the chi-square test, the expected counts represent the frequency we would expect to see in each cell under the assumption that the null hypothesis is true.
In a chi-square test, what would it mean if the P-value were less than 5%? a....
In a chi-square test, what would it mean if the P-value were less than 5%? a. That there is no real difference between observed and expected values. b. That there is a difference between observed and expected values. c. That any difference between observed and expected values is probably not due to random chance. d. a and c are true e. b and c are true
Value: 2 For many students, calculating the chi square value is the most challenging part of conducting a chi square test so it is important to practice. Consider the following information An F1 tall...
Value: 2 For many students, calculating the chi square value is the most challenging part of conducting a chi square test so it is important to practice. Consider the following information An F1 tall, round seed pea plant is crossed with a dwarf, wrinkled seed pea plant. The following offspring are observed: Tall, round: 510 Tall, wrinkled: 495 Dwarf, round: 490 Dwarf, wrinkled: 505 a. What is the expected phenotype ratio? ## or ####, depending on what you think the...
10.46 10.46 A chi square test is easily implemented on a computer. With the counts 31 42 22 25 19 8 28 25 from Example 8 in columns 1-4, the MINITAB commands Dialog box: Stat > Tables > Chi...
10.46
10.46 A chi square test is easily implemented on a computer. With the counts 31 42 22 25 19 8 28 25 from Example 8 in columns 1-4, the MINITAB commands Dialog box: Stat > Tables > Chi-square Test for Association Pull down Summarized data in a two-way table. Type C1 - C4 in columns containing the table. Click Statistics and then check chi-square statistic, Display counts, Expected cell counts and Each cells contribution to chi-square. Click OK. Click...
How do you answer if your data support the expected
ratio?
Use a chi-square analysis to test the expected ratio for the F2 of Cross C. Phenotype Observed Expected Expected (O-E) (O-E) (O-E) IE Number Fraction Number Yellow 10082 10248.0625 - 1610.0625 2516,75391 2.69 13/16 Purple 2531 3/16 2364.9375 166.0625 27576.7539111966 Total = Chi-square 14.35 Number of degrees of freedom= 2-1 = 1 Probability of a match= p<0.05 On the basis of your chi-square test, does your data support the...
What is the most likely goestypes of the F1 parents? Using a chi-square test, compare the observed numbers of progerry with those expected from the cross. What conclusions can you draw from the chi-square test. Explain biologically what the chi-square test is telling you about this cross? From the chi-squared test I conclude that these offspring ratios are not correlating to the given geno types of the F1 parents. Therefore I reject the counts of the offsprings present There could...
a) true b) false 42. For a chi-square distributed random variable with 10 degrees of freedom and a level of sigpificanoe computed value of the test statistics is 16.857. This will lead us to reject the null hypothesis. a) true b) false 43. A chi-square goodness-of-fit test is always conducted as: a. a lower-tail test b. an upper-tail test d. either a lower tail or upper tail test e. a two-tail test 44. A left-tailed area in the chi-square distribution...
Value: 2 For many students, calculating the chi square value is the most challenging part of conducting a chi square test so it is important to practice. Consider the following information An F1 tall, round seed pea plant is crossed with a dwarf, wrinkled seed pea plant. The following offspring are observed: Tall, round: 510 Tall, wrinkled: 495 Dwarf, round: 490 Dwarf, wrinkled: 505 a. What is the expected phenotype ratio? ## or ####, depending on what you think the...
10.46
10.46 A chi square test is easily implemented on a computer. With the counts 31 42 22 25 19 8 28 25 from Example 8 in columns 1-4, the MINITAB commands Dialog box: Stat > Tables > Chi-square Test for Association Pull down Summarized data in a two-way table. Type C1 - C4 in columns containing the table. Click Statistics and then check chi-square statistic, Display counts, Expected cell counts and Each cells contribution to chi-square. Click OK. Click...
Most questions answered within 3 hours.
-
HELP WITH SAS
Run the following DATA step to create a SAS data set called
ABC_CORP....
asked 3 minutes ago -
A researcher wishes to study the cumulative effects of several
combinations of HIV drugs. There are...
asked 23 minutes ago -
How
to make a simple game of whack a mole in pygame
asked 6 minutes ago -
Write a c/c++ program to read a list of students from a file and
create a...
asked 15 minutes ago -
Identify two different methods for collecting data in
qualitative research. What are the benefits and challenges...
asked 16 minutes ago -
I am suppose to have my array before the main class but I am
getting the...
asked 18 minutes ago -
Your task is to design the page table for the 32bit Pentium
microprocessor. Answer the following...
asked 24 minutes ago -
The Paradise Shoes Company has estimated its weekly TVC function
from data collected over the past...
asked 23 minutes ago -
Although Epicurus advocates pursuing pleasure for the
good life, discuss a few reasons why he does...
asked 40 minutes ago -
Problem 1: Present entries to record the selected transactions
described below:
(a)
Issued $2,790,000 of 5-year,...
asked 47 minutes ago -
Using technology to support HR activities increases:
a.
the efficiency of the administrative HR functions.
b....
asked 47 minutes ago -
1. List the features used to classify leaf
types.
2. List some characteristics that are shared...
asked 52 minutes ago