Learn Important Concepts and Skills of High School Statistics

Recent questions in High school statistics

Ayaana Buck 2021-02-09

Make a scatterplot for the data.
Length (mi) and Water Flow $(1, 000 f \frac{t^{3}}{s})$ of Rivers
Length: 2540, 1980, 1460, 1420, 1290, 1040, 886, 774, 724, 659
Flow: 76, 225, 41, 58, 56, 57, 68, 67, 67, 41

tabita57i 2021-02-09

Assume two normal distributions where $μ_{1} = 0.0001, σ_{1} = 0.01, μ_{2} = - .0002, σ_{2} = 0.015, and ρ = .45$ . Using $z_{s} = {.814, .259}$ , generate $z_{1} and z_{2}$ .

Rui Baldwin 2021-02-08

State the empirical rule for variables.

snowlovelydayM 2021-02-08

Find the following percentiles for the standard normal distribution. Interpolate where appropriate.
a.91st
Percentage value is 91.

Aneeka Hunt 2021-02-08

This two-way table shows the results of asking students if they prefer to have gym class in the morning or the afternoon A.How many students participate in the survey B. How many students in grade 8 prefer to have gym in the morning C. How many grade 10 students participated in the survey D. How many students prefer To have gym in the afternoon
$\begin{array}{ccc} morning & afternoon & total \\ grade 6 & 15 & 8 & 23 \\ grade 8 & 18 & 21 & 39 \\ grade 10 & 12 & 26 & 38 \\ total & 45 & 55 & 100 \end{array}$

CoormaBak9 2021-02-08

Predicting Land Value Both figures concern the assessed value of land (with homes on the land), and both use the same data set. (a). Which do you think has a stronger relationship with value of the land-the number of acres of land or the number of rooms n the homes? Why? b. Il you were trying to predict the value of a parcel of land in e arca (on which there is a home), would you be able to te a better prediction by knowing the acreage or the num- ber of rooms in the house? Explain. (Source: Minitab File, Student 12. "Assess.")

BenoguigoliB 2021-02-06

1. Going forward, let’s define as the average number of dots after forty rolls.
What is the expected value of x?
The standard deviation of x is 2.197. What is the standard error of x?
2. What is the probability of obtaining an average that is less than 4.25?
$n = 40$
$σ = 2.197$

sodni3 2021-02-05

zScore and Raw Score A normal distribution has $μ = 30$ and $σ = 5$ .
(a)Find the z score corresponding to $x = 25$ .

babeeb0oL 2021-02-05

A normal distribution $μ = 30$ and $σ = 5$ .
Find the z score corresponding to $x = 25$ .

glasskerfu 2021-02-05

To explain:The assumptions for the test.

Chardonnay Felix 2021-02-05

To find:The factors and the factor levels.

smileycellist2 2021-02-04

To explain:The explanatory variable in the study and determine whether it is a qualitive variable or quantitative variable.

Haven 2021-02-04

Let two independent random samples, each of size 10, from two normal distributions $N (μ_{1}, σ_{2}) and N (μ_{2}, σ_{2})$ yield $x = 4.8, s_{1}^{2}$
$= 8.64, y = 5.6, s_{2}^{2}$
= 7.88.
Find a 95% confidence interval for $μ_{1} - μ_{2}$ .

zi2lalZ 2021-02-03

If we add a constant (say, d) for all data values, how this will affect the geometric mean? Give an example.

Bergen 2021-02-03

The following data on = soil depth (in centimeters) and y = percentage of montmorillonite in the soil were taken from a scatterplot in the paper "Ancient Maya Drained Field Agriculture: Its Possible Application Today in the New River Floodplain, Belize, C.A." (Agricultural Ecosystems and Environment [1984]: 67-84):
a. Draw a scatterplot of y versus x.
b. The equation of the least-squares line is 0.45x. Draw this line on your scatterplot. Do there appear to be any large residuals?
c. Compute the residuals, and construct a residual plot. Are there any unusual features in the plot?
$\begin{array}{cc} x & 40 & 50 & 60 & 70 & 80 & 90 & 100 \\ y & 58 & 34 & 32 & 30 & 28 & 27 & 22 \end{array}$
$[\hat{y} = 64.50]$ .

Khaleesi Herbert 2021-02-03

Whether the given study depicts an observational study or a designed experiment.

iohanetc 2021-02-01

To compare and contrast:Observational studies and designed experiments and to identify the study that allows a researcher to claim causality.

generals336 2021-01-31

The centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect new data on smokers and Questions Navigation Menu preliminary estimate of the proportion who smoke of .26.
a) How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02?(to the nearest whole number) Use 95% confidence.
b) Assume that the study uses your sample size recommendation in part (a) and finds 520 smokers. What is the point estimate of the proportion of smokers in the population (to 4 decimals)?
c) What is the 95% confidence interval for the proportion of smokers in the population?(to 4 decimals)?

lwfrgin 2021-01-31

Answer the following question using the two-way table below. Round your answer to the nearest whole percentage point. There are 300 seniors at Bellmere Senior High School who are enrolled in elective science classes as shown below.
$\begin{array}{cccc} Physics & Chemistry & Total \\ Males & 100 & 68 & 168 \\ Females & 71 & 61 & 132 \\ Total & 171 & 129 & 300 \end{array}$
What is the probability that a senior student chosen at random is enrolled in physics given that student is female?

ddaeeric 2021-01-31

Make a scatterplot for each set of data.
$\begin{array}{cc} Hits: & 7 & 8 & 4 & 11 & 8 & 2 & 5 & 9 & 1 & 4 \\ Runs: & 3 & 2 & 2 & 7 & 4 & 2 & 1 & 3 & 0 & 1 \end{array}$

As a rule, high school statistics help is quite hard to find because once a student starts looking for statistics help, it comes up with more advanced help in this regard. Taking this problem into consideration, we have collected some helpful high school statistics questions and answers that will meet the high-school level standards. Looking into these will help you to find the most suitable solution or post your own questions based on equations, data reports, and so on. Take your time to explore available high school statistics questions as these will be mostly similar to what you may have.

High school statistics

Statistics Projects for High School Students