Learn Important Concepts and Skills of High School Statistics

Recent questions in High school statistics

Rivka Thorpe 2021-09-16

If a student is selected at random, find the probability the student is a male given that it’s a senior. Use the two-way table below.

floymdiT 2021-09-15

The following 2 sets of data represent test scores in a morning and afternoon section of a math class.
Each of these sections has 15 students, whose test scores are given below
morning
63, 74, 71, 54, 70, 83, 57, 78, 91, 84, 93, 73, 85, 87, 76
afternoon
63, 79, 93, 88, 76, 85, 98, 66, 88, 74, 64, 89, 99, 95, 83
Construct a back-to-back stem-leaf plot to represent the distribution of the test scores for the morning and the afternoon classes.

Armorikam 2021-09-15

1. Explain the value that represents the midpoint of the distribution.
2. Explain the value that represents the balance point of a distribution.
3. Explain the value that represents the zero point of a distribution.

BolkowN 2021-09-15

Find the TRUE answer about a two-way table, please:
a) Marginal distributions are usually not presented as percentages.
b) There are two sets of conditional distributions in every two-way table.
c) Conditional distribution compare cell counts to the table total.
d) Marginal distribution describe relationship between two variables

Khadija Wells 2021-09-15

Consider a two-way table with two variables: one with 3 categories and the other with 6 categories. How many degrees of freedom does the chi-square statistic associated with the two-way table have?

vazelinahS 2021-09-15

Explain about of the measure of central tendency that is most appropriate for these data.

Jaya Legge 2021-09-15

According to the recent study on world happiness, where participants were asked to evaluate their current lives on a scale from 0 to 10, (0 represents the worst possible life and 10 is the best possible life), the responses were normally distributed with a mean of 6.3 and a standart deviation of 2.5.
What is the probability that a randomly selected study participants response was less than 4?

Tabansi 2021-09-14

A.C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of television per week. Assume the amount watched by a randomly selected child is normally distributed and the standard deviation is 3 hours. If 20 children between the ages of 2 and 5 are randomly selected, find the standard error of the average number of hours watched by them in the sample.

Carol Gates 2021-09-14

The two-way table shows the eye color of 200 cats participating in a cat show.
$\begin{array}{lcccc} Green & Blue & Yellow & Total \\ Male & 40 & 24 & 16 & 80 \\ Female & 30 & 60 & 30 & 120 \\ Total & 70 & 84 & 46 & 200 \end{array}$
Make a two-way relative frequency table to show the distribution of the data with respect to gender. Round to the nearest tenth of a percent, as needed.

e1s2kat26 2021-09-14

Use the two-way table of data from another student survey to answer the following question.
Like Aerobic Exercise Like Weight Lifting Yes No Total Yes 7 14 21 No 12 7 19 Total 19 21 40
Find the joint relative frequency of students surveyed who like aerobics exercise but dislike weight lifting.

coexpennan 2021-09-13

Choose the right answer:
A contingency table …..
a) involves two mutually exclusive variables
b) is a two-way table
c) is a two-way table and involves two variables
d) involves two variables

Tyra 2021-09-13

A repeated measures study comparing three treatment conditions. n=4. p values are 3, 6, 9, and 6. what is the value for SS between subjects?

Carol Gates 2021-09-12

2 cards are delt from a usual card deck.
a) What are the odds of the second card dealt being a Jack?
b) What are the odds of both cards dealt being Jacks?
c) What are the odds of neither of the cards dealt being a Jack?
d) What are the odds of either of the cards dealt being a Jack?

sibuzwaW 2021-09-12

Assume that the age distribution of the Statistics 101 students has a mean of 23 years and a standard deviation of 3 years. If we randomly sampled 100 students, which of the following statements about the sampling distribution of the sample mean age is incorrect.
A) The sample mean's expected value is the same as the population's mean.
B) The sampling distribution's standard deviation is 3 years.
C) The shape of the sampling distribution is approximately normal.
D) The standard error of the sampling distribution is equal to 0.3 years.

Maiclubk 2021-09-11

2 6-sided dice are rolled. What is the probability of getting a sum of 10?

texelaare 2021-09-11

Find $(A \cup D)$ using the following table.

Nannie Mack 2021-09-11

Fill in right answer.
“In a two-way table, we compare two ___ variables.”

CMIIh 2021-09-11

Create a two-way table that shows the joint and marginal relative frequencies using the table below.

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High school statistics